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Finding the Fourth Proportional to 389,480.47, 584,250.25 and 105,166.88

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Solution

The fourth proportional to 389,480.47, 584,250.25 and 105,166.88 is: 157,758.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,480.47 : 584,250.25 = 105,166.88 : x
  2. Step 2: Convert to fraction form
    389,480.47/584,250.25 = 105,166.88/x
  3. Step 3: Cross multiply
    389,480.47x = 584,250.25 × 105,166.88
  4. Step 4: Simplify right side
    389,480.47x = 61,443,776,861.05
  5. Step 5: Solve for x
    x = 61,443,776,861.05/389,480.47
  6. Step 6: Final answer
    x = 157,758.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.