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Finding the Fourth Proportional to 325,637.28, 488,417.04 and 89,000.64

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Solution

The fourth proportional to 325,637.28, 488,417.04 and 89,000.64 is: 133,490.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,637.28 : 488,417.04 = 89,000.64 : x
  2. Step 2: Convert to fraction form
    325,637.28/488,417.04 = 89,000.64/x
  3. Step 3: Cross multiply
    325,637.28x = 488,417.04 × 89,000.64
  4. Step 4: Simplify right side
    325,637.28x = 43,469,429,146.91
  5. Step 5: Solve for x
    x = 43,469,429,146.91/325,637.28
  6. Step 6: Final answer
    x = 133,490.33

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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.