Home / 219,831.20-329,746.80-86,667.20

Finding the Fourth Proportional to 219,831.20, 329,746.80 and 86,667.20

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Solution

The fourth proportional to 219,831.20, 329,746.80 and 86,667.20 is: 130,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,831.20 : 329,746.80 = 86,667.20 : x
  2. Step 2: Convert to fraction form
    219,831.20/329,746.80 = 86,667.20/x
  3. Step 3: Cross multiply
    219,831.20x = 329,746.80 × 86,667.20
  4. Step 4: Simplify right side
    219,831.20x = 28,578,231,864.96
  5. Step 5: Solve for x
    x = 28,578,231,864.96/219,831.20
  6. Step 6: Final answer
    x = 130,000.80

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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.