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Finding the Fourth Proportional to 658,172, 908,277.36 and 356,366

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Solution

The fourth proportional to 658,172, 908,277.36 and 356,366 is: 491,785.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,172 : 908,277.36 = 356,366 : x
  2. Step 2: Convert to fraction form
    658,172/908,277.36 = 356,366/x
  3. Step 3: Cross multiply
    658,172x = 908,277.36 × 356,366
  4. Step 4: Simplify right side
    658,172x = 323,679,169,673.76
  5. Step 5: Solve for x
    x = 323,679,169,673.76/658,172
  6. Step 6: Final answer
    x = 491,785.08

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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.