Home / 261,845.70-391,861.35-156,740.10

Finding the Fourth Proportional to 261,845.70, 391,861.35 and 156,740.10

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Solution

The fourth proportional to 261,845.70, 391,861.35 and 156,740.10 is: 234,567.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,845.70 : 391,861.35 = 156,740.10 : x
  2. Step 2: Convert to fraction form
    261,845.70/391,861.35 = 156,740.10/x
  3. Step 3: Cross multiply
    261,845.70x = 391,861.35 × 156,740.10
  4. Step 4: Simplify right side
    261,845.70x = 61,420,387,185.14
  5. Step 5: Solve for x
    x = 61,420,387,185.14/261,845.70
  6. Step 6: Final answer
    x = 234,567.10

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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.