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Finding the Fourth Proportional to 547,257.11, 755,157.53 and 317,769.66

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Solution

The fourth proportional to 547,257.11, 755,157.53 and 317,769.66 is: 438,488.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,257.11 : 755,157.53 = 317,769.66 : x
  2. Step 2: Convert to fraction form
    547,257.11/755,157.53 = 317,769.66/x
  3. Step 3: Cross multiply
    547,257.11x = 755,157.53 × 317,769.66
  4. Step 4: Simplify right side
    547,257.11x = 239,966,151,853.59
  5. Step 5: Solve for x
    x = 239,966,151,853.59/547,257.11
  6. Step 6: Final answer
    x = 438,488.87

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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.