Home / 261,008.10-390,734.55-155,772.90

Finding the Fourth Proportional to 261,008.10, 390,734.55 and 155,772.90

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Solution

The fourth proportional to 261,008.10, 390,734.55 and 155,772.90 is: 233,195.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,008.10 : 390,734.55 = 155,772.90 : x
  2. Step 2: Convert to fraction form
    261,008.10/390,734.55 = 155,772.90/x
  3. Step 3: Cross multiply
    261,008.10x = 390,734.55 × 155,772.90
  4. Step 4: Simplify right side
    261,008.10x = 60,865,853,983.70
  5. Step 5: Solve for x
    x = 60,865,853,983.70/261,008.10
  6. Step 6: Final answer
    x = 233,195.27

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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.