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Finding the Fourth Proportional to 339,311.70, 508,967.19 and 86,592.18

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Solution

The fourth proportional to 339,311.70, 508,967.19 and 86,592.18 is: 129,888.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,311.70 : 508,967.19 = 86,592.18 : x
  2. Step 2: Convert to fraction form
    339,311.70/508,967.19 = 86,592.18/x
  3. Step 3: Cross multiply
    339,311.70x = 508,967.19 × 86,592.18
  4. Step 4: Simplify right side
    339,311.70x = 44,072,578,530.57
  5. Step 5: Solve for x
    x = 44,072,578,530.57/339,311.70
  6. Step 6: Final answer
    x = 129,888.18

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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.