Home / 398,848.20-598,272.30-257,130.60

Finding the Fourth Proportional to 398,848.20, 598,272.30 and 257,130.60

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Solution

The fourth proportional to 398,848.20, 598,272.30 and 257,130.60 is: 385,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,848.20 : 598,272.30 = 257,130.60 : x
  2. Step 2: Convert to fraction form
    398,848.20/598,272.30 = 257,130.60/x
  3. Step 3: Cross multiply
    398,848.20x = 598,272.30 × 257,130.60
  4. Step 4: Simplify right side
    398,848.20x = 153,834,115,462.38
  5. Step 5: Solve for x
    x = 153,834,115,462.38/398,848.20
  6. Step 6: Final answer
    x = 385,695.90

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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.