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Finding the Fourth Proportional to 311,801.85, 430,283.88 and 168,560.64

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Solution

The fourth proportional to 311,801.85, 430,283.88 and 168,560.64 is: 232,612.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,801.85 : 430,283.88 = 168,560.64 : x
  2. Step 2: Convert to fraction form
    311,801.85/430,283.88 = 168,560.64/x
  3. Step 3: Cross multiply
    311,801.85x = 430,283.88 × 168,560.64
  4. Step 4: Simplify right side
    311,801.85x = 72,528,926,194.48
  5. Step 5: Solve for x
    x = 72,528,926,194.48/311,801.85
  6. Step 6: Final answer
    x = 232,612.24

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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.