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Finding the Fourth Proportional to 278,036.46, 415,019.93 and 238,845.42

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Solution

The fourth proportional to 278,036.46, 415,019.93 and 238,845.42 is: 356,520.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,036.46 : 415,019.93 = 238,845.42 : x
  2. Step 2: Convert to fraction form
    278,036.46/415,019.93 = 238,845.42/x
  3. Step 3: Cross multiply
    278,036.46x = 415,019.93 × 238,845.42
  4. Step 4: Simplify right side
    278,036.46x = 99,125,608,294.99
  5. Step 5: Solve for x
    x = 99,125,608,294.99/278,036.46
  6. Step 6: Final answer
    x = 356,520.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.