Home / 278,665.12-384,545.01-157,803.64

Finding the Fourth Proportional to 278,665.12, 384,545.01 and 157,803.64

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Solution

The fourth proportional to 278,665.12, 384,545.01 and 157,803.64 is: 217,761.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,665.12 : 384,545.01 = 157,803.64 : x
  2. Step 2: Convert to fraction form
    278,665.12/384,545.01 = 157,803.64/x
  3. Step 3: Cross multiply
    278,665.12x = 384,545.01 × 157,803.64
  4. Step 4: Simplify right side
    278,665.12x = 60,682,602,321.84
  5. Step 5: Solve for x
    x = 60,682,602,321.84/278,665.12
  6. Step 6: Final answer
    x = 217,761.74

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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.