Home / 285,831.10-428,746.68-75,470.86

Finding the Fourth Proportional to 285,831.10, 428,746.68 and 75,470.86

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Solution

The fourth proportional to 285,831.10, 428,746.68 and 75,470.86 is: 113,206.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,831.10 : 428,746.68 = 75,470.86 : x
  2. Step 2: Convert to fraction form
    285,831.10/428,746.68 = 75,470.86/x
  3. Step 3: Cross multiply
    285,831.10x = 428,746.68 × 75,470.86
  4. Step 4: Simplify right side
    285,831.10x = 32,357,880,661.74
  5. Step 5: Solve for x
    x = 32,357,880,661.74/285,831.10
  6. Step 6: Final answer
    x = 113,206.30

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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.