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Finding the Fourth Proportional to 547,859.58, 755,916.48 and 318,280.47

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Solution

The fourth proportional to 547,859.58, 755,916.48 and 318,280.47 is: 439,151.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,859.58 : 755,916.48 = 318,280.47 : x
  2. Step 2: Convert to fraction form
    547,859.58/755,916.48 = 318,280.47/x
  3. Step 3: Cross multiply
    547,859.58x = 755,916.48 × 318,280.47
  4. Step 4: Simplify right side
    547,859.58x = 240,593,452,535.15
  5. Step 5: Solve for x
    x = 240,593,452,535.15/547,859.58
  6. Step 6: Final answer
    x = 439,151.68

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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.