Home / 219,399.02-328,876.95-86,372.63

Finding the Fourth Proportional to 219,399.02, 328,876.95 and 86,372.63

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Solution

The fourth proportional to 219,399.02, 328,876.95 and 86,372.63 is: 129,471.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,399.02 : 328,876.95 = 86,372.63 : x
  2. Step 2: Convert to fraction form
    219,399.02/328,876.95 = 86,372.63/x
  3. Step 3: Cross multiply
    219,399.02x = 328,876.95 × 86,372.63
  4. Step 4: Simplify right side
    219,399.02x = 28,405,967,117.88
  5. Step 5: Solve for x
    x = 28,405,967,117.88/219,399.02
  6. Step 6: Final answer
    x = 129,471.71

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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.