Home / 387,130.20-580,695.30-245,412.60

Finding the Fourth Proportional to 387,130.20, 580,695.30 and 245,412.60

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Solution

The fourth proportional to 387,130.20, 580,695.30 and 245,412.60 is: 368,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,130.20 : 580,695.30 = 245,412.60 : x
  2. Step 2: Convert to fraction form
    387,130.20/580,695.30 = 245,412.60/x
  3. Step 3: Cross multiply
    387,130.20x = 580,695.30 × 245,412.60
  4. Step 4: Simplify right side
    387,130.20x = 142,509,943,380.78
  5. Step 5: Solve for x
    x = 142,509,943,380.78/387,130.20
  6. Step 6: Final answer
    x = 368,118.90

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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.