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Finding the Fourth Proportional to 515,553.10, 773,079.64 and 302,390.64

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Solution

The fourth proportional to 515,553.10, 773,079.64 and 302,390.64 is: 453,439.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,553.10 : 773,079.64 = 302,390.64 : x
  2. Step 2: Convert to fraction form
    515,553.10/773,079.64 = 302,390.64/x
  3. Step 3: Cross multiply
    515,553.10x = 773,079.64 × 302,390.64
  4. Step 4: Simplify right side
    515,553.10x = 233,772,047,110.57
  5. Step 5: Solve for x
    x = 233,772,047,110.57/515,553.10
  6. Step 6: Final answer
    x = 453,439.32

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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.