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Finding the Fourth Proportional to 671,138.88, 926,171.81 and 369,332.88

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Solution

The fourth proportional to 671,138.88, 926,171.81 and 369,332.88 is: 509,679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,138.88 : 926,171.81 = 369,332.88 : x
  2. Step 2: Convert to fraction form
    671,138.88/926,171.81 = 369,332.88/x
  3. Step 3: Cross multiply
    671,138.88x = 926,171.81 × 369,332.88
  4. Step 4: Simplify right side
    671,138.88x = 342,065,701,962.11
  5. Step 5: Solve for x
    x = 342,065,701,962.11/671,138.88
  6. Step 6: Final answer
    x = 509,679.46

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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.