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Finding the Fourth Proportional to 352,502.40, 528,753.60 and 212,534.40

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Solution

The fourth proportional to 352,502.40, 528,753.60 and 212,534.40 is: 318,801.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,502.40 : 528,753.60 = 212,534.40 : x
  2. Step 2: Convert to fraction form
    352,502.40/528,753.60 = 212,534.40/x
  3. Step 3: Cross multiply
    352,502.40x = 528,753.60 × 212,534.40
  4. Step 4: Simplify right side
    352,502.40x = 112,378,329,123.84
  5. Step 5: Solve for x
    x = 112,378,329,123.84/352,502.40
  6. Step 6: Final answer
    x = 318,801.60

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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.