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Finding the Fourth Proportional to 280,236.52, 386,734.95 and 159,395.22

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Solution

The fourth proportional to 280,236.52, 386,734.95 and 159,395.22 is: 219,970.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,236.52 : 386,734.95 = 159,395.22 : x
  2. Step 2: Convert to fraction form
    280,236.52/386,734.95 = 159,395.22/x
  3. Step 3: Cross multiply
    280,236.52x = 386,734.95 × 159,395.22
  4. Step 4: Simplify right side
    280,236.52x = 61,643,699,706.29
  5. Step 5: Solve for x
    x = 61,643,699,706.29/280,236.52
  6. Step 6: Final answer
    x = 219,970.26

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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.