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Finding the Fourth Proportional to 404,743.86, 607,124.03 and 138,810.06

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Solution

The fourth proportional to 404,743.86, 607,124.03 and 138,810.06 is: 208,217.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,743.86 : 607,124.03 = 138,810.06 : x
  2. Step 2: Convert to fraction form
    404,743.86/607,124.03 = 138,810.06/x
  3. Step 3: Cross multiply
    404,743.86x = 607,124.03 × 138,810.06
  4. Step 4: Simplify right side
    404,743.86x = 84,274,923,031.74
  5. Step 5: Solve for x
    x = 84,274,923,031.74/404,743.86
  6. Step 6: Final answer
    x = 208,217.92

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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.