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Finding the Fourth Proportional to 478,136.68, 716,960.22 and 267,718.12

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Solution

The fourth proportional to 478,136.68, 716,960.22 and 267,718.12 is: 401,440.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,136.68 : 716,960.22 = 267,718.12 : x
  2. Step 2: Convert to fraction form
    478,136.68/716,960.22 = 267,718.12/x
  3. Step 3: Cross multiply
    478,136.68x = 716,960.22 × 267,718.12
  4. Step 4: Simplify right side
    478,136.68x = 191,943,242,213.19
  5. Step 5: Solve for x
    x = 191,943,242,213.19/478,136.68
  6. Step 6: Final answer
    x = 401,440.11

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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.