Home / 538,204.24-742,712.52-311,870.80

Finding the Fourth Proportional to 538,204.24, 742,712.52 and 311,870.80

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Solution

The fourth proportional to 538,204.24, 742,712.52 and 311,870.80 is: 430,376.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,204.24 : 742,712.52 = 311,870.80 : x
  2. Step 2: Convert to fraction form
    538,204.24/742,712.52 = 311,870.80/x
  3. Step 3: Cross multiply
    538,204.24x = 742,712.52 × 311,870.80
  4. Step 4: Simplify right side
    538,204.24x = 231,630,347,782.42
  5. Step 5: Solve for x
    x = 231,630,347,782.42/538,204.24
  6. Step 6: Final answer
    x = 430,376.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.