Home / 487,938.90-731,908.35-155,514.90

Finding the Fourth Proportional to 487,938.90, 731,908.35 and 155,514.90

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Solution

The fourth proportional to 487,938.90, 731,908.35 and 155,514.90 is: 233,272.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,938.90 : 731,908.35 = 155,514.90 : x
  2. Step 2: Convert to fraction form
    487,938.90/731,908.35 = 155,514.90/x
  3. Step 3: Cross multiply
    487,938.90x = 731,908.35 × 155,514.90
  4. Step 4: Simplify right side
    487,938.90x = 113,822,653,859.42
  5. Step 5: Solve for x
    x = 113,822,653,859.42/487,938.90
  6. Step 6: Final answer
    x = 233,272.35

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Double scale
Find fourth proportional to 487,939.90, 731,909.85 and 155,515.90
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.