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Finding the Fourth Proportional to 353,263.92, 487,253.54 and 217,119.12

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Solution

The fourth proportional to 353,263.92, 487,253.54 and 217,119.12 is: 299,470.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,263.92 : 487,253.54 = 217,119.12 : x
  2. Step 2: Convert to fraction form
    353,263.92/487,253.54 = 217,119.12/x
  3. Step 3: Cross multiply
    353,263.92x = 487,253.54 × 217,119.12
  4. Step 4: Simplify right side
    353,263.92x = 105,792,059,821.69
  5. Step 5: Solve for x
    x = 105,792,059,821.69/353,263.92
  6. Step 6: Final answer
    x = 299,470.32

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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.