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Finding the Fourth Proportional to 462,420.40, 693,630.60 and 146,909.20

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Solution

The fourth proportional to 462,420.40, 693,630.60 and 146,909.20 is: 220,363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,420.40 : 693,630.60 = 146,909.20 : x
  2. Step 2: Convert to fraction form
    462,420.40/693,630.60 = 146,909.20/x
  3. Step 3: Cross multiply
    462,420.40x = 693,630.60 × 146,909.20
  4. Step 4: Simplify right side
    462,420.40x = 101,900,716,541.52
  5. Step 5: Solve for x
    x = 101,900,716,541.52/462,420.40
  6. Step 6: Final answer
    x = 220,363.80

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Similar ratio
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1.5x scale

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.