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Finding the Fourth Proportional to 231,574.40, 347,361.60 and 156,730.40

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Solution

The fourth proportional to 231,574.40, 347,361.60 and 156,730.40 is: 235,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,574.40 : 347,361.60 = 156,730.40 : x
  2. Step 2: Convert to fraction form
    231,574.40/347,361.60 = 156,730.40/x
  3. Step 3: Cross multiply
    231,574.40x = 347,361.60 × 156,730.40
  4. Step 4: Simplify right side
    231,574.40x = 54,442,122,512.64
  5. Step 5: Solve for x
    x = 54,442,122,512.64/231,574.40
  6. Step 6: Final answer
    x = 235,095.60

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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.