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Finding the Fourth Proportional to 315,084.69, 434,854.26 and 179,139.15

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Solution

The fourth proportional to 315,084.69, 434,854.26 and 179,139.15 is: 247,233.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,084.69 : 434,854.26 = 179,139.15 : x
  2. Step 2: Convert to fraction form
    315,084.69/434,854.26 = 179,139.15/x
  3. Step 3: Cross multiply
    315,084.69x = 434,854.26 × 179,139.15
  4. Step 4: Simplify right side
    315,084.69x = 77,899,422,510.28
  5. Step 5: Solve for x
    x = 77,899,422,510.28/315,084.69
  6. Step 6: Final answer
    x = 247,233.28

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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.