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Finding the Fourth Proportional to 353,073.57, 529,443.87 and 128,275.48

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Solution

The fourth proportional to 353,073.57, 529,443.87 and 128,275.48 is: 192,352.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,073.57 : 529,443.87 = 128,275.48 : x
  2. Step 2: Convert to fraction form
    353,073.57/529,443.87 = 128,275.48/x
  3. Step 3: Cross multiply
    353,073.57x = 529,443.87 × 128,275.48
  4. Step 4: Simplify right side
    353,073.57x = 67,914,666,557.31
  5. Step 5: Solve for x
    x = 67,914,666,557.31/353,073.57
  6. Step 6: Final answer
    x = 192,352.73

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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.