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Finding the Fourth Proportional to 347,781.60, 521,672.40 and 292,669.20

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Solution

The fourth proportional to 347,781.60, 521,672.40 and 292,669.20 is: 439,003.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,781.60 : 521,672.40 = 292,669.20 : x
  2. Step 2: Convert to fraction form
    347,781.60/521,672.40 = 292,669.20/x
  3. Step 3: Cross multiply
    347,781.60x = 521,672.40 × 292,669.20
  4. Step 4: Simplify right side
    347,781.60x = 152,677,443,970.08
  5. Step 5: Solve for x
    x = 152,677,443,970.08/347,781.60
  6. Step 6: Final answer
    x = 439,003.80

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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.