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Finding the Fourth Proportional to 443,151.60, 612,348.88 and 315,605.76

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Solution

The fourth proportional to 443,151.60, 612,348.88 and 315,605.76 is: 436,105.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,151.60 : 612,348.88 = 315,605.76 : x
  2. Step 2: Convert to fraction form
    443,151.60/612,348.88 = 315,605.76/x
  3. Step 3: Cross multiply
    443,151.60x = 612,348.88 × 315,605.76
  4. Step 4: Simplify right side
    443,151.60x = 193,260,833,657.55
  5. Step 5: Solve for x
    x = 193,260,833,657.55/443,151.60
  6. Step 6: Final answer
    x = 436,105.46

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1.5x scale

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.