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Finding the Fourth Proportional to 305,616, 458,540.64 and 118,642.08

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Solution

The fourth proportional to 305,616, 458,540.64 and 118,642.08 is: 178,008.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,616 : 458,540.64 = 118,642.08 : x
  2. Step 2: Convert to fraction form
    305,616/458,540.64 = 118,642.08/x
  3. Step 3: Cross multiply
    305,616x = 458,540.64 × 118,642.08
  4. Step 4: Simplify right side
    305,616x = 54,402,215,294.13
  5. Step 5: Solve for x
    x = 54,402,215,294.13/305,616
  6. Step 6: Final answer
    x = 178,008.40

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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.