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Finding the Fourth Proportional to 515,554.10, 773,081.14 and 302,391.64

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Solution

The fourth proportional to 515,554.10, 773,081.14 and 302,391.64 is: 453,440.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,554.10 : 773,081.14 = 302,391.64 : x
  2. Step 2: Convert to fraction form
    515,554.10/773,081.14 = 302,391.64/x
  3. Step 3: Cross multiply
    515,554.10x = 773,081.14 × 302,391.64
  4. Step 4: Simplify right side
    515,554.10x = 233,773,273,777.67
  5. Step 5: Solve for x
    x = 233,773,273,777.67/515,554.10
  6. Step 6: Final answer
    x = 453,440.82

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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.