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Finding the Fourth Proportional to 289,635.92, 433,888.28 and 137,616.65

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Solution

The fourth proportional to 289,635.92, 433,888.28 and 137,616.65 is: 206,156.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,635.92 : 433,888.28 = 137,616.65 : x
  2. Step 2: Convert to fraction form
    289,635.92/433,888.28 = 137,616.65/x
  3. Step 3: Cross multiply
    289,635.92x = 433,888.28 × 137,616.65
  4. Step 4: Simplify right side
    289,635.92x = 59,710,254,206.79
  5. Step 5: Solve for x
    x = 59,710,254,206.79/289,635.92
  6. Step 6: Final answer
    x = 206,156.25

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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.