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Finding the Fourth Proportional to 348,059.60, 521,398.20 and 207,400.40

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Solution

The fourth proportional to 348,059.60, 521,398.20 and 207,400.40 is: 310,688.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,059.60 : 521,398.20 = 207,400.40 : x
  2. Step 2: Convert to fraction form
    348,059.60/521,398.20 = 207,400.40/x
  3. Step 3: Cross multiply
    348,059.60x = 521,398.20 × 207,400.40
  4. Step 4: Simplify right side
    348,059.60x = 108,138,195,239.28
  5. Step 5: Solve for x
    x = 108,138,195,239.28/348,059.60
  6. Step 6: Final answer
    x = 310,688.73

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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.