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Finding the Fourth Proportional to 315,017.40, 434,708.27 and 179,033.39

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Solution

The fourth proportional to 315,017.40, 434,708.27 and 179,033.39 is: 247,057.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,017.40 : 434,708.27 = 179,033.39 : x
  2. Step 2: Convert to fraction form
    315,017.40/434,708.27 = 179,033.39/x
  3. Step 3: Cross multiply
    315,017.40x = 434,708.27 × 179,033.39
  4. Step 4: Simplify right side
    315,017.40x = 77,827,294,471.96
  5. Step 5: Solve for x
    x = 77,827,294,471.96/315,017.40
  6. Step 6: Final answer
    x = 247,057.13

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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.