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Finding the Fourth Proportional to 230,585.80, 318,160.02 and 139,989.46

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Solution

The fourth proportional to 230,585.80, 318,160.02 and 139,989.46 is: 193,156.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,585.80 : 318,160.02 = 139,989.46 : x
  2. Step 2: Convert to fraction form
    230,585.80/318,160.02 = 139,989.46/x
  3. Step 3: Cross multiply
    230,585.80x = 318,160.02 × 139,989.46
  4. Step 4: Simplify right side
    230,585.80x = 44,539,049,393.39
  5. Step 5: Solve for x
    x = 44,539,049,393.39/230,585.80
  6. Step 6: Final answer
    x = 193,156.08

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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.