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Finding the Fourth Proportional to 260,395.36, 390,593.04 and 82,956.80

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Solution

The fourth proportional to 260,395.36, 390,593.04 and 82,956.80 is: 124,435.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,395.36 : 390,593.04 = 82,956.80 : x
  2. Step 2: Convert to fraction form
    260,395.36/390,593.04 = 82,956.80/x
  3. Step 3: Cross multiply
    260,395.36x = 390,593.04 × 82,956.80
  4. Step 4: Simplify right side
    260,395.36x = 32,402,348,700.67
  5. Step 5: Solve for x
    x = 32,402,348,700.67/260,395.36
  6. Step 6: Final answer
    x = 124,435.20

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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.