Home / 305,831.10-458,819.55-147,929.70

Finding the Fourth Proportional to 305,831.10, 458,819.55 and 147,929.70

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Solution

The fourth proportional to 305,831.10, 458,819.55 and 147,929.70 is: 221,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,831.10 : 458,819.55 = 147,929.70 : x
  2. Step 2: Convert to fraction form
    305,831.10/458,819.55 = 147,929.70/x
  3. Step 3: Cross multiply
    305,831.10x = 458,819.55 × 147,929.70
  4. Step 4: Simplify right side
    305,831.10x = 67,873,038,385.64
  5. Step 5: Solve for x
    x = 67,873,038,385.64/305,831.10
  6. Step 6: Final answer
    x = 221,929.81

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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.