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Finding the Fourth Proportional to 343,316.60, 514,974.90 and 329,319.80

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Solution

The fourth proportional to 343,316.60, 514,974.90 and 329,319.80 is: 493,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,316.60 : 514,974.90 = 329,319.80 : x
  2. Step 2: Convert to fraction form
    343,316.60/514,974.90 = 329,319.80/x
  3. Step 3: Cross multiply
    343,316.60x = 514,974.90 × 329,319.80
  4. Step 4: Simplify right side
    343,316.60x = 169,591,431,073.02
  5. Step 5: Solve for x
    x = 169,591,431,073.02/343,316.60
  6. Step 6: Final answer
    x = 493,979.70

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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.