Home / 278,909.46-384,895.10-151,585.05

Finding the Fourth Proportional to 278,909.46, 384,895.10 and 151,585.05

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Solution

The fourth proportional to 278,909.46, 384,895.10 and 151,585.05 is: 209,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,909.46 : 384,895.10 = 151,585.05 : x
  2. Step 2: Convert to fraction form
    278,909.46/384,895.10 = 151,585.05/x
  3. Step 3: Cross multiply
    278,909.46x = 384,895.10 × 151,585.05
  4. Step 4: Simplify right side
    278,909.46x = 58,344,344,800.57
  5. Step 5: Solve for x
    x = 58,344,344,800.57/278,909.46
  6. Step 6: Final answer
    x = 209,187.40

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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.