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Finding the Fourth Proportional to 287,898.94, 431,832.84 and 88,219.92

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Solution

The fourth proportional to 287,898.94, 431,832.84 and 88,219.92 is: 132,325.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,898.94 : 431,832.84 = 88,219.92 : x
  2. Step 2: Convert to fraction form
    287,898.94/431,832.84 = 88,219.92/x
  3. Step 3: Cross multiply
    287,898.94x = 431,832.84 × 88,219.92
  4. Step 4: Simplify right side
    287,898.94x = 38,096,258,598.17
  5. Step 5: Solve for x
    x = 38,096,258,598.17/287,898.94
  6. Step 6: Final answer
    x = 132,325.11

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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.