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Finding the Fourth Proportional to 387,275.72, 581,140.96 and 162,618.88

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Solution

The fourth proportional to 387,275.72, 581,140.96 and 162,618.88 is: 244,023.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,275.72 : 581,140.96 = 162,618.88 : x
  2. Step 2: Convert to fraction form
    387,275.72/581,140.96 = 162,618.88/x
  3. Step 3: Cross multiply
    387,275.72x = 581,140.96 × 162,618.88
  4. Step 4: Simplify right side
    387,275.72x = 94,504,492,037.32
  5. Step 5: Solve for x
    x = 94,504,492,037.32/387,275.72
  6. Step 6: Final answer
    x = 244,023.80

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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.