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Finding the Fourth Proportional to 402,788.88, 604,144.08 and 122,308.56

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Solution

The fourth proportional to 402,788.88, 604,144.08 and 122,308.56 is: 183,450.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,788.88 : 604,144.08 = 122,308.56 : x
  2. Step 2: Convert to fraction form
    402,788.88/604,144.08 = 122,308.56/x
  3. Step 3: Cross multiply
    402,788.88x = 604,144.08 × 122,308.56
  4. Step 4: Simplify right side
    402,788.88x = 73,891,992,457.32
  5. Step 5: Solve for x
    x = 73,891,992,457.32/402,788.88
  6. Step 6: Final answer
    x = 183,450.92

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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.