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Finding the Fourth Proportional to 352,497.12, 528,727.04 and 217,586.76

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Solution

The fourth proportional to 352,497.12, 528,727.04 and 217,586.76 is: 326,368.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,497.12 : 528,727.04 = 217,586.76 : x
  2. Step 2: Convert to fraction form
    352,497.12/528,727.04 = 217,586.76/x
  3. Step 3: Cross multiply
    352,497.12x = 528,727.04 × 217,586.76
  4. Step 4: Simplify right side
    352,497.12x = 115,044,002,470.06
  5. Step 5: Solve for x
    x = 115,044,002,470.06/352,497.12
  6. Step 6: Final answer
    x = 326,368.63

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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.