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Finding the Fourth Proportional to 280,287.72, 386,805.60 and 159,446.52

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Solution

The fourth proportional to 280,287.72, 386,805.60 and 159,446.52 is: 220,041.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,287.72 : 386,805.60 = 159,446.52 : x
  2. Step 2: Convert to fraction form
    280,287.72/386,805.60 = 159,446.52/x
  3. Step 3: Cross multiply
    280,287.72x = 386,805.60 × 159,446.52
  4. Step 4: Simplify right side
    280,287.72x = 61,674,806,836.51
  5. Step 5: Solve for x
    x = 61,674,806,836.51/280,287.72
  6. Step 6: Final answer
    x = 220,041.06

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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.