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Finding the Fourth Proportional to 318,461.76, 439,468.14 and 175,221.88

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Solution

The fourth proportional to 318,461.76, 439,468.14 and 175,221.88 is: 241,801.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,461.76 : 439,468.14 = 175,221.88 : x
  2. Step 2: Convert to fraction form
    318,461.76/439,468.14 = 175,221.88/x
  3. Step 3: Cross multiply
    318,461.76x = 439,468.14 × 175,221.88
  4. Step 4: Simplify right side
    318,461.76x = 77,004,433,690.90
  5. Step 5: Solve for x
    x = 77,004,433,690.90/318,461.76
  6. Step 6: Final answer
    x = 241,801.19

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1.5x scale

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.