Home / 239,289,720.88-330,220,048.44-129,281,521.36

Finding the Fourth Proportional to 239,289,720.88, 330,220,048.44 and 129,281,521.36

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Solution

The fourth proportional to 239,289,720.88, 330,220,048.44 and 129,281,521.36 is: 178,408,625.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,289,720.88 : 330,220,048.44 = 129,281,521.36 : x
  2. Step 2: Convert to fraction form
    239,289,720.88/330,220,048.44 = 129,281,521.36/x
  3. Step 3: Cross multiply
    239,289,720.88x = 330,220,048.44 × 129,281,521.36
  4. Step 4: Simplify right side
    239,289,720.88x = 42,691,350,245,896,096
  5. Step 5: Solve for x
    x = 42,691,350,245,896,096/239,289,720.88
  6. Step 6: Final answer
    x = 178,408,625.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.