Home / 309,282.40-426,839.70-173,339.38

Finding the Fourth Proportional to 309,282.40, 426,839.70 and 173,339.38

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Solution

The fourth proportional to 309,282.40, 426,839.70 and 173,339.38 is: 239,225.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,282.40 : 426,839.70 = 173,339.38 : x
  2. Step 2: Convert to fraction form
    309,282.40/426,839.70 = 173,339.38/x
  3. Step 3: Cross multiply
    309,282.40x = 426,839.70 × 173,339.38
  4. Step 4: Simplify right side
    309,282.40x = 73,988,128,957.39
  5. Step 5: Solve for x
    x = 73,988,128,957.39/309,282.40
  6. Step 6: Final answer
    x = 239,225.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.