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Finding the Fourth Proportional to 316,363.92, 436,582.28 and 173,124

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Solution

The fourth proportional to 316,363.92, 436,582.28 and 173,124 is: 238,911.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,363.92 : 436,582.28 = 173,124 : x
  2. Step 2: Convert to fraction form
    316,363.92/436,582.28 = 173,124/x
  3. Step 3: Cross multiply
    316,363.92x = 436,582.28 × 173,124
  4. Step 4: Simplify right side
    316,363.92x = 75,582,870,642.72
  5. Step 5: Solve for x
    x = 75,582,870,642.72/316,363.92
  6. Step 6: Final answer
    x = 238,911.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.