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Finding the Fourth Proportional to 311,506.52, 429,878.96 and 168,266.60

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Solution

The fourth proportional to 311,506.52, 429,878.96 and 168,266.60 is: 232,207.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,506.52 : 429,878.96 = 168,266.60 : x
  2. Step 2: Convert to fraction form
    311,506.52/429,878.96 = 168,266.60/x
  3. Step 3: Cross multiply
    311,506.52x = 429,878.96 × 168,266.60
  4. Step 4: Simplify right side
    311,506.52x = 72,334,271,010.74
  5. Step 5: Solve for x
    x = 72,334,271,010.74/311,506.52
  6. Step 6: Final answer
    x = 232,207.89

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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.