Home / 411,443.10-617,214-145,148.70

Finding the Fourth Proportional to 411,443.10, 617,214 and 145,148.70

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Solution

The fourth proportional to 411,443.10, 617,214 and 145,148.70 is: 217,740.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,443.10 : 617,214 = 145,148.70 : x
  2. Step 2: Convert to fraction form
    411,443.10/617,214 = 145,148.70/x
  3. Step 3: Cross multiply
    411,443.10x = 617,214 × 145,148.70
  4. Step 4: Simplify right side
    411,443.10x = 89,587,809,721.80
  5. Step 5: Solve for x
    x = 89,587,809,721.80/411,443.10
  6. Step 6: Final answer
    x = 217,740.46

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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.