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Finding the Fourth Proportional to 474,979.21, 655,473.41 and 260,120.77

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Solution

The fourth proportional to 474,979.21, 655,473.41 and 260,120.77 is: 358,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,979.21 : 655,473.41 = 260,120.77 : x
  2. Step 2: Convert to fraction form
    474,979.21/655,473.41 = 260,120.77/x
  3. Step 3: Cross multiply
    474,979.21x = 655,473.41 × 260,120.77
  4. Step 4: Simplify right side
    474,979.21x = 170,502,248,123.73
  5. Step 5: Solve for x
    x = 170,502,248,123.73/474,979.21
  6. Step 6: Final answer
    x = 358,967.81

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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.