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Finding the Fourth Proportional to 311,547.20, 467,324.54 and 86,893.95

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Solution

The fourth proportional to 311,547.20, 467,324.54 and 86,893.95 is: 130,341.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,547.20 : 467,324.54 = 86,893.95 : x
  2. Step 2: Convert to fraction form
    311,547.20/467,324.54 = 86,893.95/x
  3. Step 3: Cross multiply
    311,547.20x = 467,324.54 × 86,893.95
  4. Step 4: Simplify right side
    311,547.20x = 40,607,675,429.77
  5. Step 5: Solve for x
    x = 40,607,675,429.77/311,547.20
  6. Step 6: Final answer
    x = 130,341.97

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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.