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Finding the Fourth Proportional to 312,390.62, 468,488.96 and 112,685.02

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Solution

The fourth proportional to 312,390.62, 468,488.96 and 112,685.02 is: 168,992.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,390.62 : 468,488.96 = 112,685.02 : x
  2. Step 2: Convert to fraction form
    312,390.62/468,488.96 = 112,685.02/x
  3. Step 3: Cross multiply
    312,390.62x = 468,488.96 × 112,685.02
  4. Step 4: Simplify right side
    312,390.62x = 52,791,689,784.40
  5. Step 5: Solve for x
    x = 52,791,689,784.40/312,390.62
  6. Step 6: Final answer
    x = 168,992.56

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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.