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Finding the Fourth Proportional to 517,519.90, 776,017.20 and 236,796.58

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Solution

The fourth proportional to 517,519.90, 776,017.20 and 236,796.58 is: 355,074.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,519.90 : 776,017.20 = 236,796.58 : x
  2. Step 2: Convert to fraction form
    517,519.90/776,017.20 = 236,796.58/x
  3. Step 3: Cross multiply
    517,519.90x = 776,017.20 × 236,796.58
  4. Step 4: Simplify right side
    517,519.90x = 183,758,218,981.18
  5. Step 5: Solve for x
    x = 183,758,218,981.18/517,519.90
  6. Step 6: Final answer
    x = 355,074.69

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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.