Home / 379,621.20-569,431.80-239,998.80

Finding the Fourth Proportional to 379,621.20, 569,431.80 and 239,998.80

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Solution

The fourth proportional to 379,621.20, 569,431.80 and 239,998.80 is: 359,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,621.20 : 569,431.80 = 239,998.80 : x
  2. Step 2: Convert to fraction form
    379,621.20/569,431.80 = 239,998.80/x
  3. Step 3: Cross multiply
    379,621.20x = 569,431.80 × 239,998.80
  4. Step 4: Simplify right side
    379,621.20x = 136,662,948,681.84
  5. Step 5: Solve for x
    x = 136,662,948,681.84/379,621.20
  6. Step 6: Final answer
    x = 359,998.20

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1.5x scale

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.