Home / 399,273.20-598,909.80-265,720.40

Finding the Fourth Proportional to 399,273.20, 598,909.80 and 265,720.40

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Solution

The fourth proportional to 399,273.20, 598,909.80 and 265,720.40 is: 398,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,273.20 : 598,909.80 = 265,720.40 : x
  2. Step 2: Convert to fraction form
    399,273.20/598,909.80 = 265,720.40/x
  3. Step 3: Cross multiply
    399,273.20x = 598,909.80 × 265,720.40
  4. Step 4: Simplify right side
    399,273.20x = 159,142,551,619.92
  5. Step 5: Solve for x
    x = 159,142,551,619.92/399,273.20
  6. Step 6: Final answer
    x = 398,580.60

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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.