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Finding the Fourth Proportional to 287,881.12, 431,834.64 and 88,186.96

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Solution

The fourth proportional to 287,881.12, 431,834.64 and 88,186.96 is: 132,284.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,881.12 : 431,834.64 = 88,186.96 : x
  2. Step 2: Convert to fraction form
    287,881.12/431,834.64 = 88,186.96/x
  3. Step 3: Cross multiply
    287,881.12x = 431,834.64 × 88,186.96
  4. Step 4: Simplify right side
    287,881.12x = 38,082,184,124.29
  5. Step 5: Solve for x
    x = 38,082,184,124.29/287,881.12
  6. Step 6: Final answer
    x = 132,284.41

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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.