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Finding the Fourth Proportional to 311,548.37, 429,937.20 and 168,308.47

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Solution

The fourth proportional to 311,548.37, 429,937.20 and 168,308.47 is: 232,265.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,548.37 : 429,937.20 = 168,308.47 : x
  2. Step 2: Convert to fraction form
    311,548.37/429,937.20 = 168,308.47/x
  3. Step 3: Cross multiply
    311,548.37x = 429,937.20 × 168,308.47
  4. Step 4: Simplify right side
    311,548.37x = 72,362,070,178.40
  5. Step 5: Solve for x
    x = 72,362,070,178.40/311,548.37
  6. Step 6: Final answer
    x = 232,265.92

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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.