Home / 279,638.31-385,927.71-172,271.19

Finding the Fourth Proportional to 279,638.31, 385,927.71 and 172,271.19

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Solution

The fourth proportional to 279,638.31, 385,927.71 and 172,271.19 is: 237,750.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,638.31 : 385,927.71 = 172,271.19 : x
  2. Step 2: Convert to fraction form
    279,638.31/385,927.71 = 172,271.19/x
  3. Step 3: Cross multiply
    279,638.31x = 385,927.71 × 172,271.19
  4. Step 4: Simplify right side
    279,638.31x = 66,484,225,855.67
  5. Step 5: Solve for x
    x = 66,484,225,855.67/279,638.31
  6. Step 6: Final answer
    x = 237,750.78

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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.