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Finding the Fourth Proportional to 537,990.54, 742,429.17 and 308,556.69

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Solution

The fourth proportional to 537,990.54, 742,429.17 and 308,556.69 is: 425,809.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,990.54 : 742,429.17 = 308,556.69 : x
  2. Step 2: Convert to fraction form
    537,990.54/742,429.17 = 308,556.69/x
  3. Step 3: Cross multiply
    537,990.54x = 742,429.17 × 308,556.69
  4. Step 4: Simplify right side
    537,990.54x = 229,081,487,254.65
  5. Step 5: Solve for x
    x = 229,081,487,254.65/537,990.54
  6. Step 6: Final answer
    x = 425,809.51

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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.