Home / 318,895.78-478,344.27-299,409.61

Finding the Fourth Proportional to 318,895.78, 478,344.27 and 299,409.61

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Solution

The fourth proportional to 318,895.78, 478,344.27 and 299,409.61 is: 449,114.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,895.78 : 478,344.27 = 299,409.61 : x
  2. Step 2: Convert to fraction form
    318,895.78/478,344.27 = 299,409.61/x
  3. Step 3: Cross multiply
    318,895.78x = 478,344.27 × 299,409.61
  4. Step 4: Simplify right side
    318,895.78x = 143,220,871,326.44
  5. Step 5: Solve for x
    x = 143,220,871,326.44/318,895.78
  6. Step 6: Final answer
    x = 449,114.98

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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.