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Finding the Fourth Proportional to 408,488.86, 563,484.54 and 245,103.13

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Solution

The fourth proportional to 408,488.86, 563,484.54 and 245,103.13 is: 338,104.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,488.86 : 563,484.54 = 245,103.13 : x
  2. Step 2: Convert to fraction form
    408,488.86/563,484.54 = 245,103.13/x
  3. Step 3: Cross multiply
    408,488.86x = 563,484.54 × 245,103.13
  4. Step 4: Simplify right side
    408,488.86x = 138,111,824,460.61
  5. Step 5: Solve for x
    x = 138,111,824,460.61/408,488.86
  6. Step 6: Final answer
    x = 338,104.26

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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.