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Finding the Fourth Proportional to 409,812.72, 565,581.87 and 248,655.12

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Solution

The fourth proportional to 409,812.72, 565,581.87 and 248,655.12 is: 343,168.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,812.72 : 565,581.87 = 248,655.12 : x
  2. Step 2: Convert to fraction form
    409,812.72/565,581.87 = 248,655.12/x
  3. Step 3: Cross multiply
    409,812.72x = 565,581.87 × 248,655.12
  4. Step 4: Simplify right side
    409,812.72x = 140,634,827,754.67
  5. Step 5: Solve for x
    x = 140,634,827,754.67/409,812.72
  6. Step 6: Final answer
    x = 343,168.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.