Home / 399,269.20-598,903.80-257,551.60

Finding the Fourth Proportional to 399,269.20, 598,903.80 and 257,551.60

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Solution

The fourth proportional to 399,269.20, 598,903.80 and 257,551.60 is: 386,327.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,269.20 : 598,903.80 = 257,551.60 : x
  2. Step 2: Convert to fraction form
    399,269.20/598,903.80 = 257,551.60/x
  3. Step 3: Cross multiply
    399,269.20x = 598,903.80 × 257,551.60
  4. Step 4: Simplify right side
    399,269.20x = 154,248,631,936.08
  5. Step 5: Solve for x
    x = 154,248,631,936.08/399,269.20
  6. Step 6: Final answer
    x = 386,327.40

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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.