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Finding the Fourth Proportional to 315,378.73, 473,130.42 and 115,700.95

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Solution

The fourth proportional to 315,378.73, 473,130.42 and 115,700.95 is: 173,574.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,378.73 : 473,130.42 = 115,700.95 : x
  2. Step 2: Convert to fraction form
    315,378.73/473,130.42 = 115,700.95/x
  3. Step 3: Cross multiply
    315,378.73x = 473,130.42 × 115,700.95
  4. Step 4: Simplify right side
    315,378.73x = 54,741,639,067.90
  5. Step 5: Solve for x
    x = 54,741,639,067.90/315,378.73
  6. Step 6: Final answer
    x = 173,574.29

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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.