Home / 387,215.02-580,734.80-147,243.36

Finding the Fourth Proportional to 387,215.02, 580,734.80 and 147,243.36

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Solution

The fourth proportional to 387,215.02, 580,734.80 and 147,243.36 is: 220,831.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,215.02 : 580,734.80 = 147,243.36 : x
  2. Step 2: Convert to fraction form
    387,215.02/580,734.80 = 147,243.36/x
  3. Step 3: Cross multiply
    387,215.02x = 580,734.80 × 147,243.36
  4. Step 4: Simplify right side
    387,215.02x = 85,509,343,220.93
  5. Step 5: Solve for x
    x = 85,509,343,220.93/387,215.02
  6. Step 6: Final answer
    x = 220,831.68

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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.