Home / 239,712.20-359,669.10-128,774.60

Finding the Fourth Proportional to 239,712.20, 359,669.10 and 128,774.60

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Solution

The fourth proportional to 239,712.20, 359,669.10 and 128,774.60 is: 193,216.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,712.20 : 359,669.10 = 128,774.60 : x
  2. Step 2: Convert to fraction form
    239,712.20/359,669.10 = 128,774.60/x
  3. Step 3: Cross multiply
    239,712.20x = 359,669.10 × 128,774.60
  4. Step 4: Simplify right side
    239,712.20x = 46,316,244,484.86
  5. Step 5: Solve for x
    x = 46,316,244,484.86/239,712.20
  6. Step 6: Final answer
    x = 193,216.05

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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.