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Finding the Fourth Proportional to 338,653.56, 508,064.81 and 239,008.40

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Solution

The fourth proportional to 338,653.56, 508,064.81 and 239,008.40 is: 358,572.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,653.56 : 508,064.81 = 239,008.40 : x
  2. Step 2: Convert to fraction form
    338,653.56/508,064.81 = 239,008.40/x
  3. Step 3: Cross multiply
    338,653.56x = 508,064.81 × 239,008.40
  4. Step 4: Simplify right side
    338,653.56x = 121,431,757,334.40
  5. Step 5: Solve for x
    x = 121,431,757,334.40/338,653.56
  6. Step 6: Final answer
    x = 358,572.22

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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.