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Finding the Fourth Proportional to 353,700.09, 530,287.43 and 318,057.39

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Solution

The fourth proportional to 353,700.09, 530,287.43 and 318,057.39 is: 476,849.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,700.09 : 530,287.43 = 318,057.39 : x
  2. Step 2: Convert to fraction form
    353,700.09/530,287.43 = 318,057.39/x
  3. Step 3: Cross multiply
    353,700.09x = 530,287.43 × 318,057.39
  4. Step 4: Simplify right side
    353,700.09x = 168,661,834,345.32
  5. Step 5: Solve for x
    x = 168,661,834,345.32/353,700.09
  6. Step 6: Final answer
    x = 476,849.85

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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.