Home / 278,848.60-418,272.90-91,835.80

Finding the Fourth Proportional to 278,848.60, 418,272.90 and 91,835.80

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Solution

The fourth proportional to 278,848.60, 418,272.90 and 91,835.80 is: 137,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,848.60 : 418,272.90 = 91,835.80 : x
  2. Step 2: Convert to fraction form
    278,848.60/418,272.90 = 91,835.80/x
  3. Step 3: Cross multiply
    278,848.60x = 418,272.90 × 91,835.80
  4. Step 4: Simplify right side
    278,848.60x = 38,412,426,389.82
  5. Step 5: Solve for x
    x = 38,412,426,389.82/278,848.60
  6. Step 6: Final answer
    x = 137,753.70

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1.5x scale

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.