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Finding the Fourth Proportional to 312,352.11, 468,547.29 and 87,730.83

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Solution

The fourth proportional to 312,352.11, 468,547.29 and 87,730.83 is: 131,601.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,352.11 : 468,547.29 = 87,730.83 : x
  2. Step 2: Convert to fraction form
    312,352.11/468,547.29 = 87,730.83/x
  3. Step 3: Cross multiply
    312,352.11x = 468,547.29 × 87,730.83
  4. Step 4: Simplify right side
    312,352.11x = 41,106,042,645.95
  5. Step 5: Solve for x
    x = 41,106,042,645.95/312,352.11
  6. Step 6: Final answer
    x = 131,601.62

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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.