Home / 268,420.72-370,430.14-153,719.86

Finding the Fourth Proportional to 268,420.72, 370,430.14 and 153,719.86

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Solution

The fourth proportional to 268,420.72, 370,430.14 and 153,719.86 is: 212,138.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,420.72 : 370,430.14 = 153,719.86 : x
  2. Step 2: Convert to fraction form
    268,420.72/370,430.14 = 153,719.86/x
  3. Step 3: Cross multiply
    268,420.72x = 370,430.14 × 153,719.86
  4. Step 4: Simplify right side
    268,420.72x = 56,942,469,260.58
  5. Step 5: Solve for x
    x = 56,942,469,260.58/268,420.72
  6. Step 6: Final answer
    x = 212,138.87

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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.