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Finding the Fourth Proportional to 261,044.60, 390,692.10 and 229,551.80

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Solution

The fourth proportional to 261,044.60, 390,692.10 and 229,551.80 is: 343,558.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,044.60 : 390,692.10 = 229,551.80 : x
  2. Step 2: Convert to fraction form
    261,044.60/390,692.10 = 229,551.80/x
  3. Step 3: Cross multiply
    261,044.60x = 390,692.10 × 229,551.80
  4. Step 4: Simplify right side
    261,044.60x = 89,684,074,800.78
  5. Step 5: Solve for x
    x = 89,684,074,800.78/261,044.60
  6. Step 6: Final answer
    x = 343,558.44

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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.