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Finding the Fourth Proportional to 547,381.89, 755,172.50 and 317,899.95

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Solution

The fourth proportional to 547,381.89, 755,172.50 and 317,899.95 is: 438,577.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,381.89 : 755,172.50 = 317,899.95 : x
  2. Step 2: Convert to fraction form
    547,381.89/755,172.50 = 317,899.95/x
  3. Step 3: Cross multiply
    547,381.89x = 755,172.50 × 317,899.95
  4. Step 4: Simplify right side
    547,381.89x = 240,069,298,401.88
  5. Step 5: Solve for x
    x = 240,069,298,401.88/547,381.89
  6. Step 6: Final answer
    x = 438,577.35

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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.