Home / 260,138,357.28-390,207,704.40-66,064,327.20

Finding the Fourth Proportional to 260,138,357.28, 390,207,704.40 and 66,064,327.20

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Solution

The fourth proportional to 260,138,357.28, 390,207,704.40 and 66,064,327.20 is: 99,096,533.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,138,357.28 : 390,207,704.40 = 66,064,327.20 : x
  2. Step 2: Convert to fraction form
    260,138,357.28/390,207,704.40 = 66,064,327.20/x
  3. Step 3: Cross multiply
    260,138,357.28x = 390,207,704.40 × 66,064,327.20
  4. Step 4: Simplify right side
    260,138,357.28x = 25,778,809,459,442,480
  5. Step 5: Solve for x
    x = 25,778,809,459,442,480/260,138,357.28
  6. Step 6: Final answer
    x = 99,096,533.59

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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.