Home / 261,045.10-391,567.65-257,545.90

Finding the Fourth Proportional to 261,045.10, 391,567.65 and 257,545.90

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Solution

The fourth proportional to 261,045.10, 391,567.65 and 257,545.90 is: 386,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,045.10 : 391,567.65 = 257,545.90 : x
  2. Step 2: Convert to fraction form
    261,045.10/391,567.65 = 257,545.90/x
  3. Step 3: Cross multiply
    261,045.10x = 391,567.65 × 257,545.90
  4. Step 4: Simplify right side
    261,045.10x = 100,846,642,830.14
  5. Step 5: Solve for x
    x = 100,846,642,830.14/261,045.10
  6. Step 6: Final answer
    x = 386,318.85

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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.