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Finding the Fourth Proportional to 288,691.47, 432,889.34 and 153,832.39

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Solution

The fourth proportional to 288,691.47, 432,889.34 and 153,832.39 is: 230,669.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,691.47 : 432,889.34 = 153,832.39 : x
  2. Step 2: Convert to fraction form
    288,691.47/432,889.34 = 153,832.39/x
  3. Step 3: Cross multiply
    288,691.47x = 432,889.34 × 153,832.39
  4. Step 4: Simplify right side
    288,691.47x = 66,592,399,926.34
  5. Step 5: Solve for x
    x = 66,592,399,926.34/288,691.47
  6. Step 6: Final answer
    x = 230,669.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.