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Finding the Fourth Proportional to 257,461.26, 386,130.33 and 88,987.56

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Solution

The fourth proportional to 257,461.26, 386,130.33 and 88,987.56 is: 133,460.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,461.26 : 386,130.33 = 88,987.56 : x
  2. Step 2: Convert to fraction form
    257,461.26/386,130.33 = 88,987.56/x
  3. Step 3: Cross multiply
    257,461.26x = 386,130.33 × 88,987.56
  4. Step 4: Simplify right side
    257,461.26x = 34,360,795,908.69
  5. Step 5: Solve for x
    x = 34,360,795,908.69/257,461.26
  6. Step 6: Final answer
    x = 133,460.06

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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.