Home / 380,749.86-571,175.10-140,831.10

Finding the Fourth Proportional to 380,749.86, 571,175.10 and 140,831.10

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Solution

The fourth proportional to 380,749.86, 571,175.10 and 140,831.10 is: 211,265.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,749.86 : 571,175.10 = 140,831.10 : x
  2. Step 2: Convert to fraction form
    380,749.86/571,175.10 = 140,831.10/x
  3. Step 3: Cross multiply
    380,749.86x = 571,175.10 × 140,831.10
  4. Step 4: Simplify right side
    380,749.86x = 80,439,217,625.61
  5. Step 5: Solve for x
    x = 80,439,217,625.61/380,749.86
  6. Step 6: Final answer
    x = 211,265.26

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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.