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Finding the Fourth Proportional to 658,590.48, 988,031.52 and 209,448.72

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Solution

The fourth proportional to 658,590.48, 988,031.52 and 209,448.72 is: 314,219.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,590.48 : 988,031.52 = 209,448.72 : x
  2. Step 2: Convert to fraction form
    658,590.48/988,031.52 = 209,448.72/x
  3. Step 3: Cross multiply
    658,590.48x = 988,031.52 × 209,448.72
  4. Step 4: Simplify right side
    658,590.48x = 206,941,937,183.65
  5. Step 5: Solve for x
    x = 206,941,937,183.65/658,590.48
  6. Step 6: Final answer
    x = 314,219.45

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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.