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Finding the Fourth Proportional to 310,986.40, 466,537.20 and 100,631.20

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Solution

The fourth proportional to 310,986.40, 466,537.20 and 100,631.20 is: 150,965.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,986.40 : 466,537.20 = 100,631.20 : x
  2. Step 2: Convert to fraction form
    310,986.40/466,537.20 = 100,631.20/x
  3. Step 3: Cross multiply
    310,986.40x = 466,537.20 × 100,631.20
  4. Step 4: Simplify right side
    310,986.40x = 46,948,198,280.64
  5. Step 5: Solve for x
    x = 46,948,198,280.64/310,986.40
  6. Step 6: Final answer
    x = 150,965.44

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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.