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Finding the Fourth Proportional to 387,237.20, 580,855.80 and 102,927.20

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Solution

The fourth proportional to 387,237.20, 580,855.80 and 102,927.20 is: 154,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,237.20 : 580,855.80 = 102,927.20 : x
  2. Step 2: Convert to fraction form
    387,237.20/580,855.80 = 102,927.20/x
  3. Step 3: Cross multiply
    387,237.20x = 580,855.80 × 102,927.20
  4. Step 4: Simplify right side
    387,237.20x = 59,785,861,097.76
  5. Step 5: Solve for x
    x = 59,785,861,097.76/387,237.20
  6. Step 6: Final answer
    x = 154,390.80

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1.5x scale

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.