Home / 380,050.92-523,831.10-288,139.78

Finding the Fourth Proportional to 380,050.92, 523,831.10 and 288,139.78

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Solution

The fourth proportional to 380,050.92, 523,831.10 and 288,139.78 is: 397,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,050.92 : 523,831.10 = 288,139.78 : x
  2. Step 2: Convert to fraction form
    380,050.92/523,831.10 = 288,139.78/x
  3. Step 3: Cross multiply
    380,050.92x = 523,831.10 × 288,139.78
  4. Step 4: Simplify right side
    380,050.92x = 150,936,577,911.16
  5. Step 5: Solve for x
    x = 150,936,577,911.16/380,050.92
  6. Step 6: Final answer
    x = 397,148.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.