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Finding the Fourth Proportional to 425,689.68, 587,455.72 and 234,709.86

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Solution

The fourth proportional to 425,689.68, 587,455.72 and 234,709.86 is: 323,901.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,689.68 : 587,455.72 = 234,709.86 : x
  2. Step 2: Convert to fraction form
    425,689.68/587,455.72 = 234,709.86/x
  3. Step 3: Cross multiply
    425,689.68x = 587,455.72 × 234,709.86
  4. Step 4: Simplify right side
    425,689.68x = 137,881,649,797.40
  5. Step 5: Solve for x
    x = 137,881,649,797.40/425,689.68
  6. Step 6: Final answer
    x = 323,901.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.