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Finding the Fourth Proportional to 312,279.18, 430,951.04 and 183,309.98

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Solution

The fourth proportional to 312,279.18, 430,951.04 and 183,309.98 is: 252,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,279.18 : 430,951.04 = 183,309.98 : x
  2. Step 2: Convert to fraction form
    312,279.18/430,951.04 = 183,309.98/x
  3. Step 3: Cross multiply
    312,279.18x = 430,951.04 × 183,309.98
  4. Step 4: Simplify right side
    312,279.18x = 78,997,623,452.07
  5. Step 5: Solve for x
    x = 78,997,623,452.07/312,279.18
  6. Step 6: Final answer
    x = 252,971.15

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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.