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Finding the Fourth Proportional to 425,439.30, 587,118.54 and 234,465

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Solution

The fourth proportional to 425,439.30, 587,118.54 and 234,465 is: 323,568.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,439.30 : 587,118.54 = 234,465 : x
  2. Step 2: Convert to fraction form
    425,439.30/587,118.54 = 234,465/x
  3. Step 3: Cross multiply
    425,439.30x = 587,118.54 × 234,465
  4. Step 4: Simplify right side
    425,439.30x = 137,658,748,481.10
  5. Step 5: Solve for x
    x = 137,658,748,481.10/425,439.30
  6. Step 6: Final answer
    x = 323,568.48

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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.