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Finding the Fourth Proportional to 460,271.70, 690,407.55 and 127,847.70

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Solution

The fourth proportional to 460,271.70, 690,407.55 and 127,847.70 is: 191,771.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,271.70 : 690,407.55 = 127,847.70 : x
  2. Step 2: Convert to fraction form
    460,271.70/690,407.55 = 127,847.70/x
  3. Step 3: Cross multiply
    460,271.70x = 690,407.55 × 127,847.70
  4. Step 4: Simplify right side
    460,271.70x = 88,267,017,330.14
  5. Step 5: Solve for x
    x = 88,267,017,330.14/460,271.70
  6. Step 6: Final answer
    x = 191,771.55

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Similar ratio
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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.