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Finding the Fourth Proportional to 376,159.40, 519,099.97 and 215,017.94

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Solution

The fourth proportional to 376,159.40, 519,099.97 and 215,017.94 is: 296,724.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,159.40 : 519,099.97 = 215,017.94 : x
  2. Step 2: Convert to fraction form
    376,159.40/519,099.97 = 215,017.94/x
  3. Step 3: Cross multiply
    376,159.40x = 519,099.97 × 215,017.94
  4. Step 4: Simplify right side
    376,159.40x = 111,615,803,607.96
  5. Step 5: Solve for x
    x = 111,615,803,607.96/376,159.40
  6. Step 6: Final answer
    x = 296,724.75

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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.