Home / 293,493.20-439,721.40-260,315.60

Finding the Fourth Proportional to 293,493.20, 439,721.40 and 260,315.60

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Solution

The fourth proportional to 293,493.20, 439,721.40 and 260,315.60 is: 390,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,493.20 : 439,721.40 = 260,315.60 : x
  2. Step 2: Convert to fraction form
    293,493.20/439,721.40 = 260,315.60/x
  3. Step 3: Cross multiply
    293,493.20x = 439,721.40 × 260,315.60
  4. Step 4: Simplify right side
    293,493.20x = 114,466,340,073.84
  5. Step 5: Solve for x
    x = 114,466,340,073.84/293,493.20
  6. Step 6: Final answer
    x = 390,013.60

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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.