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Finding the Fourth Proportional to 338,228.28, 507,342.08 and 138,549.03

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Solution

The fourth proportional to 338,228.28, 507,342.08 and 138,549.03 is: 207,823.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,228.28 : 507,342.08 = 138,549.03 : x
  2. Step 2: Convert to fraction form
    338,228.28/507,342.08 = 138,549.03/x
  3. Step 3: Cross multiply
    338,228.28x = 507,342.08 × 138,549.03
  4. Step 4: Simplify right side
    338,228.28x = 70,291,754,359.82
  5. Step 5: Solve for x
    x = 70,291,754,359.82/338,228.28
  6. Step 6: Final answer
    x = 207,823.41

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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.