Home / 315,121.10-472,287.45-157,393.58

Finding the Fourth Proportional to 315,121.10, 472,287.45 and 157,393.58

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Solution

The fourth proportional to 315,121.10, 472,287.45 and 157,393.58 is: 235,893.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,121.10 : 472,287.45 = 157,393.58 : x
  2. Step 2: Convert to fraction form
    315,121.10/472,287.45 = 157,393.58/x
  3. Step 3: Cross multiply
    315,121.10x = 472,287.45 × 157,393.58
  4. Step 4: Simplify right side
    315,121.10x = 74,335,012,544.57
  5. Step 5: Solve for x
    x = 74,335,012,544.57/315,121.10
  6. Step 6: Final answer
    x = 235,893.48

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1.5x scale

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.