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Finding the Fourth Proportional to 310,350.80, 428,232.52 and 183,008.72

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Solution

The fourth proportional to 310,350.80, 428,232.52 and 183,008.72 is: 252,521.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,350.80 : 428,232.52 = 183,008.72 : x
  2. Step 2: Convert to fraction form
    310,350.80/428,232.52 = 183,008.72/x
  3. Step 3: Cross multiply
    310,350.80x = 428,232.52 × 183,008.72
  4. Step 4: Simplify right side
    310,350.80x = 78,370,285,347.57
  5. Step 5: Solve for x
    x = 78,370,285,347.57/310,350.80
  6. Step 6: Final answer
    x = 252,521.62

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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.