Home / 314,728.20-472,289.13-127,739.70

Finding the Fourth Proportional to 314,728.20, 472,289.13 and 127,739.70

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Solution

The fourth proportional to 314,728.20, 472,289.13 and 127,739.70 is: 191,689.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,728.20 : 472,289.13 = 127,739.70 : x
  2. Step 2: Convert to fraction form
    314,728.20/472,289.13 = 127,739.70/x
  3. Step 3: Cross multiply
    314,728.20x = 472,289.13 × 127,739.70
  4. Step 4: Simplify right side
    314,728.20x = 60,330,071,779.46
  5. Step 5: Solve for x
    x = 60,330,071,779.46/314,728.20
  6. Step 6: Final answer
    x = 191,689.44

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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.