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Finding the Fourth Proportional to 438,079.60, 657,119.40 and 157,560.40

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Solution

The fourth proportional to 438,079.60, 657,119.40 and 157,560.40 is: 236,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,079.60 : 657,119.40 = 157,560.40 : x
  2. Step 2: Convert to fraction form
    438,079.60/657,119.40 = 157,560.40/x
  3. Step 3: Cross multiply
    438,079.60x = 657,119.40 × 157,560.40
  4. Step 4: Simplify right side
    438,079.60x = 103,535,995,511.76
  5. Step 5: Solve for x
    x = 103,535,995,511.76/438,079.60
  6. Step 6: Final answer
    x = 236,340.60

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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.