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Finding the Fourth Proportional to 305,215.80, 457,866.90 and 94,831.80

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Solution

The fourth proportional to 305,215.80, 457,866.90 and 94,831.80 is: 142,261.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,215.80 : 457,866.90 = 94,831.80 : x
  2. Step 2: Convert to fraction form
    305,215.80/457,866.90 = 94,831.80/x
  3. Step 3: Cross multiply
    305,215.80x = 457,866.90 × 94,831.80
  4. Step 4: Simplify right side
    305,215.80x = 43,420,342,287.42
  5. Step 5: Solve for x
    x = 43,420,342,287.42/305,215.80
  6. Step 6: Final answer
    x = 142,261.12

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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.