Home / 260,281.20-390,225.48-142,053.36

Finding the Fourth Proportional to 260,281.20, 390,225.48 and 142,053.36

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Solution

The fourth proportional to 260,281.20, 390,225.48 and 142,053.36 is: 212,972.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,281.20 : 390,225.48 = 142,053.36 : x
  2. Step 2: Convert to fraction form
    260,281.20/390,225.48 = 142,053.36/x
  3. Step 3: Cross multiply
    260,281.20x = 390,225.48 × 142,053.36
  4. Step 4: Simplify right side
    260,281.20x = 55,432,840,591.61
  5. Step 5: Solve for x
    x = 55,432,840,591.61/260,281.20
  6. Step 6: Final answer
    x = 212,972.89

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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.