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Finding the Fourth Proportional to 477,831.88, 716,864.46 and 145,407.88

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Solution

The fourth proportional to 477,831.88, 716,864.46 and 145,407.88 is: 218,147.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,831.88 : 716,864.46 = 145,407.88 : x
  2. Step 2: Convert to fraction form
    477,831.88/716,864.46 = 145,407.88/x
  3. Step 3: Cross multiply
    477,831.88x = 716,864.46 × 145,407.88
  4. Step 4: Simplify right side
    477,831.88x = 104,237,741,375.95
  5. Step 5: Solve for x
    x = 104,237,741,375.95/477,831.88
  6. Step 6: Final answer
    x = 218,147.31

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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.