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Finding the Fourth Proportional to 310,912.40, 466,138.20 and 210,822.80

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Solution

The fourth proportional to 310,912.40, 466,138.20 and 210,822.80 is: 316,077.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,912.40 : 466,138.20 = 210,822.80 : x
  2. Step 2: Convert to fraction form
    310,912.40/466,138.20 = 210,822.80/x
  3. Step 3: Cross multiply
    310,912.40x = 466,138.20 × 210,822.80
  4. Step 4: Simplify right side
    310,912.40x = 98,272,560,510.96
  5. Step 5: Solve for x
    x = 98,272,560,510.96/310,912.40
  6. Step 6: Final answer
    x = 316,077.97

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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.