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Finding the Fourth Proportional to 316,363.49, 436,567.61 and 173,129.57

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Solution

The fourth proportional to 316,363.49, 436,567.61 and 173,129.57 is: 238,911.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,363.49 : 436,567.61 = 173,129.57 : x
  2. Step 2: Convert to fraction form
    316,363.49/436,567.61 = 173,129.57/x
  3. Step 3: Cross multiply
    316,363.49x = 436,567.61 × 173,129.57
  4. Step 4: Simplify right side
    316,363.49x = 75,582,759,546.74
  5. Step 5: Solve for x
    x = 75,582,759,546.74/316,363.49
  6. Step 6: Final answer
    x = 238,911.14

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1.5x scale

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.