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Finding the Fourth Proportional to 339,585.80, 509,378.70 and 162,001.40

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Solution

The fourth proportional to 339,585.80, 509,378.70 and 162,001.40 is: 243,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,585.80 : 509,378.70 = 162,001.40 : x
  2. Step 2: Convert to fraction form
    339,585.80/509,378.70 = 162,001.40/x
  3. Step 3: Cross multiply
    339,585.80x = 509,378.70 × 162,001.40
  4. Step 4: Simplify right side
    339,585.80x = 82,520,062,530.18
  5. Step 5: Solve for x
    x = 82,520,062,530.18/339,585.80
  6. Step 6: Final answer
    x = 243,002.10

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Similar ratio
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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.