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Finding the Fourth Proportional to 261,044.60, 391,566.90 and 156,068.60

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Solution

The fourth proportional to 261,044.60, 391,566.90 and 156,068.60 is: 234,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,044.60 : 391,566.90 = 156,068.60 : x
  2. Step 2: Convert to fraction form
    261,044.60/391,566.90 = 156,068.60/x
  3. Step 3: Cross multiply
    261,044.60x = 391,566.90 × 156,068.60
  4. Step 4: Simplify right side
    261,044.60x = 61,111,297,889.34
  5. Step 5: Solve for x
    x = 61,111,297,889.34/261,044.60
  6. Step 6: Final answer
    x = 234,102.90

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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.