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Finding the Fourth Proportional to 288,686.71, 398,379.42 and 159,622.96

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Solution

The fourth proportional to 288,686.71, 398,379.42 and 159,622.96 is: 220,275.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,686.71 : 398,379.42 = 159,622.96 : x
  2. Step 2: Convert to fraction form
    288,686.71/398,379.42 = 159,622.96/x
  3. Step 3: Cross multiply
    288,686.71x = 398,379.42 × 159,622.96
  4. Step 4: Simplify right side
    288,686.71x = 63,590,502,223.48
  5. Step 5: Solve for x
    x = 63,590,502,223.48/288,686.71
  6. Step 6: Final answer
    x = 220,275.13

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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.