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Finding the Fourth Proportional to 352,003.68, 485,729.10 and 216,043.32

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Solution

The fourth proportional to 352,003.68, 485,729.10 and 216,043.32 is: 298,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,003.68 : 485,729.10 = 216,043.32 : x
  2. Step 2: Convert to fraction form
    352,003.68/485,729.10 = 216,043.32/x
  3. Step 3: Cross multiply
    352,003.68x = 485,729.10 × 216,043.32
  4. Step 4: Simplify right side
    352,003.68x = 104,938,527,384.61
  5. Step 5: Solve for x
    x = 104,938,527,384.61/352,003.68
  6. Step 6: Final answer
    x = 298,117.70

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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.