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Finding the Fourth Proportional to 288,700.58, 398,398.50 and 159,636.80

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Solution

The fourth proportional to 288,700.58, 398,398.50 and 159,636.80 is: 220,294.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,700.58 : 398,398.50 = 159,636.80 : x
  2. Step 2: Convert to fraction form
    288,700.58/398,398.50 = 159,636.80/x
  3. Step 3: Cross multiply
    288,700.58x = 398,398.50 × 159,636.80
  4. Step 4: Simplify right side
    288,700.58x = 63,599,061,664.80
  5. Step 5: Solve for x
    x = 63,599,061,664.80/288,700.58
  6. Step 6: Final answer
    x = 220,294.19

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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.