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Finding the Fourth Proportional to 372,726.88, 513,748.81 and 263,690.35

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Solution

The fourth proportional to 372,726.88, 513,748.81 and 263,690.35 is: 363,458.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,726.88 : 513,748.81 = 263,690.35 : x
  2. Step 2: Convert to fraction form
    372,726.88/513,748.81 = 263,690.35/x
  3. Step 3: Cross multiply
    372,726.88x = 513,748.81 × 263,690.35
  4. Step 4: Simplify right side
    372,726.88x = 135,470,602,566.22
  5. Step 5: Solve for x
    x = 135,470,602,566.22/372,726.88
  6. Step 6: Final answer
    x = 363,458.10

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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.