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Finding the Fourth Proportional to 356,688.60, 492,292.80 and 270,931.44

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Solution

The fourth proportional to 356,688.60, 492,292.80 and 270,931.44 is: 373,932.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,688.60 : 492,292.80 = 270,931.44 : x
  2. Step 2: Convert to fraction form
    356,688.60/492,292.80 = 270,931.44/x
  3. Step 3: Cross multiply
    356,688.60x = 492,292.80 × 270,931.44
  4. Step 4: Simplify right side
    356,688.60x = 133,377,597,205.63
  5. Step 5: Solve for x
    x = 133,377,597,205.63/356,688.60
  6. Step 6: Final answer
    x = 373,932.88

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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.