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Finding the Fourth Proportional to 310,348.80, 428,229.76 and 183,006.72

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Solution

The fourth proportional to 310,348.80, 428,229.76 and 183,006.72 is: 252,518.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,348.80 : 428,229.76 = 183,006.72 : x
  2. Step 2: Convert to fraction form
    310,348.80/428,229.76 = 183,006.72/x
  3. Step 3: Cross multiply
    310,348.80x = 428,229.76 × 183,006.72
  4. Step 4: Simplify right side
    310,348.80x = 78,368,923,783.99
  5. Step 5: Solve for x
    x = 78,368,923,783.99/310,348.80
  6. Step 6: Final answer
    x = 252,518.86

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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.