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Finding the Fourth Proportional to 208,479.65, 287,719.61 and 174,428.06

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Solution

The fourth proportional to 208,479.65, 287,719.61 and 174,428.06 is: 240,725.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,479.65 : 287,719.61 = 174,428.06 : x
  2. Step 2: Convert to fraction form
    208,479.65/287,719.61 = 174,428.06/x
  3. Step 3: Cross multiply
    208,479.65x = 287,719.61 × 174,428.06
  4. Step 4: Simplify right side
    208,479.65x = 50,186,371,085.52
  5. Step 5: Solve for x
    x = 50,186,371,085.52/208,479.65
  6. Step 6: Final answer
    x = 240,725.52

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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.