Home / 280,639.07-387,167.22-207,227.40

Finding the Fourth Proportional to 280,639.07, 387,167.22 and 207,227.40

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Solution

The fourth proportional to 280,639.07, 387,167.22 and 207,227.40 is: 285,889.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,639.07 : 387,167.22 = 207,227.40 : x
  2. Step 2: Convert to fraction form
    280,639.07/387,167.22 = 207,227.40/x
  3. Step 3: Cross multiply
    280,639.07x = 387,167.22 × 207,227.40
  4. Step 4: Simplify right side
    280,639.07x = 80,231,656,365.83
  5. Step 5: Solve for x
    x = 80,231,656,365.83/280,639.07
  6. Step 6: Final answer
    x = 285,889.12

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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.