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Finding the Fourth Proportional to 460,867.60, 691,301.40 and 145,421.20

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Solution

The fourth proportional to 460,867.60, 691,301.40 and 145,421.20 is: 218,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,867.60 : 691,301.40 = 145,421.20 : x
  2. Step 2: Convert to fraction form
    460,867.60/691,301.40 = 145,421.20/x
  3. Step 3: Cross multiply
    460,867.60x = 691,301.40 × 145,421.20
  4. Step 4: Simplify right side
    460,867.60x = 100,529,879,149.68
  5. Step 5: Solve for x
    x = 100,529,879,149.68/460,867.60
  6. Step 6: Final answer
    x = 218,131.80

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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.