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Finding the Fourth Proportional to 463,964.70, 640,324.59 and 260,070.78

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Solution

The fourth proportional to 463,964.70, 640,324.59 and 260,070.78 is: 358,927.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,964.70 : 640,324.59 = 260,070.78 : x
  2. Step 2: Convert to fraction form
    463,964.70/640,324.59 = 260,070.78/x
  3. Step 3: Cross multiply
    463,964.70x = 640,324.59 × 260,070.78
  4. Step 4: Simplify right side
    463,964.70x = 166,529,715,574.48
  5. Step 5: Solve for x
    x = 166,529,715,574.48/463,964.70
  6. Step 6: Final answer
    x = 358,927.56

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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.