Home / 257,233.23-385,158.65-209,653.29

Finding the Fourth Proportional to 257,233.23, 385,158.65 and 209,653.29

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Solution

The fourth proportional to 257,233.23, 385,158.65 and 209,653.29 is: 313,916.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,233.23 : 385,158.65 = 209,653.29 : x
  2. Step 2: Convert to fraction form
    257,233.23/385,158.65 = 209,653.29/x
  3. Step 3: Cross multiply
    257,233.23x = 385,158.65 × 209,653.29
  4. Step 4: Simplify right side
    257,233.23x = 80,749,777,096.19
  5. Step 5: Solve for x
    x = 80,749,777,096.19/257,233.23
  6. Step 6: Final answer
    x = 313,916.58

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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.