Home / 387,588.20-579,999.90-268,701.80

Finding the Fourth Proportional to 387,588.20, 579,999.90 and 268,701.80

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Solution

The fourth proportional to 387,588.20, 579,999.90 and 268,701.80 is: 402,094.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,588.20 : 579,999.90 = 268,701.80 : x
  2. Step 2: Convert to fraction form
    387,588.20/579,999.90 = 268,701.80/x
  3. Step 3: Cross multiply
    387,588.20x = 579,999.90 × 268,701.80
  4. Step 4: Simplify right side
    387,588.20x = 155,847,017,129.82
  5. Step 5: Solve for x
    x = 155,847,017,129.82/387,588.20
  6. Step 6: Final answer
    x = 402,094.33

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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.