Home / 425,630.61-638,511.53-145,082.25

Finding the Fourth Proportional to 425,630.61, 638,511.53 and 145,082.25

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Solution

The fourth proportional to 425,630.61, 638,511.53 and 145,082.25 is: 217,645.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,630.61 : 638,511.53 = 145,082.25 : x
  2. Step 2: Convert to fraction form
    425,630.61/638,511.53 = 145,082.25/x
  3. Step 3: Cross multiply
    425,630.61x = 638,511.53 × 145,082.25
  4. Step 4: Simplify right side
    425,630.61x = 92,636,688,697.93
  5. Step 5: Solve for x
    x = 92,636,688,697.93/425,630.61
  6. Step 6: Final answer
    x = 217,645.74

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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.