Home / 289,412.20-434,134.72-89,760.96

Finding the Fourth Proportional to 289,412.20, 434,134.72 and 89,760.96

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Solution

The fourth proportional to 289,412.20, 434,134.72 and 89,760.96 is: 134,646.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,412.20 : 434,134.72 = 89,760.96 : x
  2. Step 2: Convert to fraction form
    289,412.20/434,134.72 = 89,760.96/x
  3. Step 3: Cross multiply
    289,412.20x = 434,134.72 × 89,760.96
  4. Step 4: Simplify right side
    289,412.20x = 38,968,349,236.53
  5. Step 5: Solve for x
    x = 38,968,349,236.53/289,412.20
  6. Step 6: Final answer
    x = 134,646.53

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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.