Home / 308,916.06-426,254.76-172,955.70

Finding the Fourth Proportional to 308,916.06, 426,254.76 and 172,955.70

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Solution

The fourth proportional to 308,916.06, 426,254.76 and 172,955.70 is: 238,651.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,916.06 : 426,254.76 = 172,955.70 : x
  2. Step 2: Convert to fraction form
    308,916.06/426,254.76 = 172,955.70/x
  3. Step 3: Cross multiply
    308,916.06x = 426,254.76 × 172,955.70
  4. Step 4: Simplify right side
    308,916.06x = 73,723,190,394.13
  5. Step 5: Solve for x
    x = 73,723,190,394.13/308,916.06
  6. Step 6: Final answer
    x = 238,651.21

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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.