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Finding the Fourth Proportional to 288,510.72, 432,178.56 and 235,392

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Solution

The fourth proportional to 288,510.72, 432,178.56 and 235,392 is: 352,608.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,510.72 : 432,178.56 = 235,392 : x
  2. Step 2: Convert to fraction form
    288,510.72/432,178.56 = 235,392/x
  3. Step 3: Cross multiply
    288,510.72x = 432,178.56 × 235,392
  4. Step 4: Simplify right side
    288,510.72x = 101,731,375,595.52
  5. Step 5: Solve for x
    x = 101,731,375,595.52/288,510.72
  6. Step 6: Final answer
    x = 352,608.65

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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.