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Finding the Fourth Proportional to 376,889.79, 520,127.81 and 213,577.93

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Solution

The fourth proportional to 376,889.79, 520,127.81 and 213,577.93 is: 294,748.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,889.79 : 520,127.81 = 213,577.93 : x
  2. Step 2: Convert to fraction form
    376,889.79/520,127.81 = 213,577.93/x
  3. Step 3: Cross multiply
    376,889.79x = 520,127.81 × 213,577.93
  4. Step 4: Simplify right side
    376,889.79x = 111,087,818,928.54
  5. Step 5: Solve for x
    x = 111,087,818,928.54/376,889.79
  6. Step 6: Final answer
    x = 294,748.82

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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.