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Finding the Fourth Proportional to 521,008.98, 719,104.50 and 317,125.50

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Solution

The fourth proportional to 521,008.98, 719,104.50 and 317,125.50 is: 437,701.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,008.98 : 719,104.50 = 317,125.50 : x
  2. Step 2: Convert to fraction form
    521,008.98/719,104.50 = 317,125.50/x
  3. Step 3: Cross multiply
    521,008.98x = 719,104.50 × 317,125.50
  4. Step 4: Simplify right side
    521,008.98x = 228,046,374,114.75
  5. Step 5: Solve for x
    x = 228,046,374,114.75/521,008.98
  6. Step 6: Final answer
    x = 437,701.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.