Home / 261,420.12-392,012.82-74,387.16

Finding the Fourth Proportional to 261,420.12, 392,012.82 and 74,387.16

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Solution

The fourth proportional to 261,420.12, 392,012.82 and 74,387.16 is: 111,547.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,420.12 : 392,012.82 = 74,387.16 : x
  2. Step 2: Convert to fraction form
    261,420.12/392,012.82 = 74,387.16/x
  3. Step 3: Cross multiply
    261,420.12x = 392,012.82 × 74,387.16
  4. Step 4: Simplify right side
    261,420.12x = 29,160,720,363.39
  5. Step 5: Solve for x
    x = 29,160,720,363.39/261,420.12
  6. Step 6: Final answer
    x = 111,547.35

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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.