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Finding the Fourth Proportional to 315,892.40, 473,147.40 and 274,420.40

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Solution

The fourth proportional to 315,892.40, 473,147.40 and 274,420.40 is: 411,030.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,892.40 : 473,147.40 = 274,420.40 : x
  2. Step 2: Convert to fraction form
    315,892.40/473,147.40 = 274,420.40/x
  3. Step 3: Cross multiply
    315,892.40x = 473,147.40 × 274,420.40
  4. Step 4: Simplify right side
    315,892.40x = 129,841,298,766.96
  5. Step 5: Solve for x
    x = 129,841,298,766.96/315,892.40
  6. Step 6: Final answer
    x = 411,030.14

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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.