Home / 260,041.20-390,191.40-147,807.60

Finding the Fourth Proportional to 260,041.20, 390,191.40 and 147,807.60

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Solution

The fourth proportional to 260,041.20, 390,191.40 and 147,807.60 is: 221,785.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,041.20 : 390,191.40 = 147,807.60 : x
  2. Step 2: Convert to fraction form
    260,041.20/390,191.40 = 147,807.60/x
  3. Step 3: Cross multiply
    260,041.20x = 390,191.40 × 147,807.60
  4. Step 4: Simplify right side
    260,041.20x = 57,673,254,374.64
  5. Step 5: Solve for x
    x = 57,673,254,374.64/260,041.20
  6. Step 6: Final answer
    x = 221,785.06

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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.