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Finding the Fourth Proportional to 552,130.60, 828,195.90 and 315,497.20

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Solution

The fourth proportional to 552,130.60, 828,195.90 and 315,497.20 is: 473,245.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,130.60 : 828,195.90 = 315,497.20 : x
  2. Step 2: Convert to fraction form
    552,130.60/828,195.90 = 315,497.20/x
  3. Step 3: Cross multiply
    552,130.60x = 828,195.90 × 315,497.20
  4. Step 4: Simplify right side
    552,130.60x = 261,293,487,501.48
  5. Step 5: Solve for x
    x = 261,293,487,501.48/552,130.60
  6. Step 6: Final answer
    x = 473,245.80

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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.