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Finding the Fourth Proportional to 280,230.68, 386,726.87 and 159,389.37

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Solution

The fourth proportional to 280,230.68, 386,726.87 and 159,389.37 is: 219,962.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,230.68 : 386,726.87 = 159,389.37 : x
  2. Step 2: Convert to fraction form
    280,230.68/386,726.87 = 159,389.37/x
  3. Step 3: Cross multiply
    280,230.68x = 386,726.87 × 159,389.37
  4. Step 4: Simplify right side
    280,230.68x = 61,640,152,569.85
  5. Step 5: Solve for x
    x = 61,640,152,569.85/280,230.68
  6. Step 6: Final answer
    x = 219,962.18

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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.