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Finding the Fourth Proportional to 587,143.40, 880,099.42 and 287,209.96

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Solution

The fourth proportional to 587,143.40, 880,099.42 and 287,209.96 is: 430,513.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,143.40 : 880,099.42 = 287,209.96 : x
  2. Step 2: Convert to fraction form
    587,143.40/880,099.42 = 287,209.96/x
  3. Step 3: Cross multiply
    587,143.40x = 880,099.42 × 287,209.96
  4. Step 4: Simplify right side
    587,143.40x = 252,773,319,214.22
  5. Step 5: Solve for x
    x = 252,773,319,214.22/587,143.40
  6. Step 6: Final answer
    x = 430,513.77

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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.