Home / 318,875.21-478,371.67-131,901.29

Finding the Fourth Proportional to 318,875.21, 478,371.67 and 131,901.29

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Solution

The fourth proportional to 318,875.21, 478,371.67 and 131,901.29 is: 197,876.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,875.21 : 478,371.67 = 131,901.29 : x
  2. Step 2: Convert to fraction form
    318,875.21/478,371.67 = 131,901.29/x
  3. Step 3: Cross multiply
    318,875.21x = 478,371.67 × 131,901.29
  4. Step 4: Simplify right side
    318,875.21x = 63,097,837,650.84
  5. Step 5: Solve for x
    x = 63,097,837,650.84/318,875.21
  6. Step 6: Final answer
    x = 197,876.27

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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.