Home / 278,927.04-384,927.90-158,065.20

Finding the Fourth Proportional to 278,927.04, 384,927.90 and 158,065.20

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Solution

The fourth proportional to 278,927.04, 384,927.90 and 158,065.20 is: 218,134.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,927.04 : 384,927.90 = 158,065.20 : x
  2. Step 2: Convert to fraction form
    278,927.04/384,927.90 = 158,065.20/x
  3. Step 3: Cross multiply
    278,927.04x = 384,927.90 × 158,065.20
  4. Step 4: Simplify right side
    278,927.04x = 60,843,705,499.08
  5. Step 5: Solve for x
    x = 60,843,705,499.08/278,927.04
  6. Step 6: Final answer
    x = 218,134.84

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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.