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Finding the Fourth Proportional to 280,375.68, 386,866.69 and 159,509.91

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Solution

The fourth proportional to 280,375.68, 386,866.69 and 159,509.91 is: 220,094.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,375.68 : 386,866.69 = 159,509.91 : x
  2. Step 2: Convert to fraction form
    280,375.68/386,866.69 = 159,509.91/x
  3. Step 3: Cross multiply
    280,375.68x = 386,866.69 × 159,509.91
  4. Step 4: Simplify right side
    280,375.68x = 61,709,070,903.90
  5. Step 5: Solve for x
    x = 61,709,070,903.90/280,375.68
  6. Step 6: Final answer
    x = 220,094.24

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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.