Home / 658,306.08-987,358.28-208,968.71

Finding the Fourth Proportional to 658,306.08, 987,358.28 and 208,968.71

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Solution

The fourth proportional to 658,306.08, 987,358.28 and 208,968.71 is: 313,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,306.08 : 987,358.28 = 208,968.71 : x
  2. Step 2: Convert to fraction form
    658,306.08/987,358.28 = 208,968.71/x
  3. Step 3: Cross multiply
    658,306.08x = 987,358.28 × 208,968.71
  4. Step 4: Simplify right side
    658,306.08x = 206,326,980,097.78
  5. Step 5: Solve for x
    x = 206,326,980,097.78/658,306.08
  6. Step 6: Final answer
    x = 313,421.05

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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.