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Finding the Fourth Proportional to 285,240, 427,883.04 and 88,248

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Solution

The fourth proportional to 285,240, 427,883.04 and 88,248 is: 132,379.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,240 : 427,883.04 = 88,248 : x
  2. Step 2: Convert to fraction form
    285,240/427,883.04 = 88,248/x
  3. Step 3: Cross multiply
    285,240x = 427,883.04 × 88,248
  4. Step 4: Simplify right side
    285,240x = 37,759,822,513.92
  5. Step 5: Solve for x
    x = 37,759,822,513.92/285,240
  6. Step 6: Final answer
    x = 132,379.13

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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.