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Finding the Fourth Proportional to 312,197.43, 430,832.45 and 168,957.47

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Solution

The fourth proportional to 312,197.43, 430,832.45 and 168,957.47 is: 233,161.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,197.43 : 430,832.45 = 168,957.47 : x
  2. Step 2: Convert to fraction form
    312,197.43/430,832.45 = 168,957.47/x
  3. Step 3: Cross multiply
    312,197.43x = 430,832.45 × 168,957.47
  4. Step 4: Simplify right side
    312,197.43x = 72,792,357,746.95
  5. Step 5: Solve for x
    x = 72,792,357,746.95/312,197.43
  6. Step 6: Final answer
    x = 233,161.30

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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.