Home / 278,704.37-384,617.10-157,870.75

Finding the Fourth Proportional to 278,704.37, 384,617.10 and 157,870.75

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Solution

The fourth proportional to 278,704.37, 384,617.10 and 157,870.75 is: 217,864.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,704.37 : 384,617.10 = 157,870.75 : x
  2. Step 2: Convert to fraction form
    278,704.37/384,617.10 = 157,870.75/x
  3. Step 3: Cross multiply
    278,704.37x = 384,617.10 × 157,870.75
  4. Step 4: Simplify right side
    278,704.37x = 60,719,788,116.74
  5. Step 5: Solve for x
    x = 60,719,788,116.74/278,704.37
  6. Step 6: Final answer
    x = 217,864.50

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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.