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Finding the Fourth Proportional to 492,144, 679,158.84 and 265,789.56

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Solution

The fourth proportional to 492,144, 679,158.84 and 265,789.56 is: 366,789.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,144 : 679,158.84 = 265,789.56 : x
  2. Step 2: Convert to fraction form
    492,144/679,158.84 = 265,789.56/x
  3. Step 3: Cross multiply
    492,144x = 679,158.84 × 265,789.56
  4. Step 4: Simplify right side
    492,144x = 180,513,329,253.71
  5. Step 5: Solve for x
    x = 180,513,329,253.71/492,144
  6. Step 6: Final answer
    x = 366,789.66

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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.