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Finding the Fourth Proportional to 476,108.80, 657,008.12 and 261,243.52

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Solution

The fourth proportional to 476,108.80, 657,008.12 and 261,243.52 is: 360,503.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,108.80 : 657,008.12 = 261,243.52 : x
  2. Step 2: Convert to fraction form
    476,108.80/657,008.12 = 261,243.52/x
  3. Step 3: Cross multiply
    476,108.80x = 657,008.12 × 261,243.52
  4. Step 4: Simplify right side
    476,108.80x = 171,639,113,937.38
  5. Step 5: Solve for x
    x = 171,639,113,937.38/476,108.80
  6. Step 6: Final answer
    x = 360,503.97

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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.