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Finding the Fourth Proportional to 312,368.59, 468,221.19 and 162,458.85

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Solution

The fourth proportional to 312,368.59, 468,221.19 and 162,458.85 is: 243,515.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,368.59 : 468,221.19 = 162,458.85 : x
  2. Step 2: Convert to fraction form
    312,368.59/468,221.19 = 162,458.85/x
  3. Step 3: Cross multiply
    312,368.59x = 468,221.19 × 162,458.85
  4. Step 4: Simplify right side
    312,368.59x = 76,066,676,073.03
  5. Step 5: Solve for x
    x = 76,066,676,073.03/312,368.59
  6. Step 6: Final answer
    x = 243,515.76

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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.