Home / 459,432.38-689,148.16-143,913.90

Finding the Fourth Proportional to 459,432.38, 689,148.16 and 143,913.90

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Solution

The fourth proportional to 459,432.38, 689,148.16 and 143,913.90 is: 215,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,432.38 : 689,148.16 = 143,913.90 : x
  2. Step 2: Convert to fraction form
    459,432.38/689,148.16 = 143,913.90/x
  3. Step 3: Cross multiply
    459,432.38x = 689,148.16 × 143,913.90
  4. Step 4: Simplify right side
    459,432.38x = 99,177,999,383.42
  5. Step 5: Solve for x
    x = 99,177,999,383.42/459,432.38
  6. Step 6: Final answer
    x = 215,870.72

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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.