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Finding the Fourth Proportional to 464,253.86, 640,935.79 and 355,157.19

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Solution

The fourth proportional to 464,253.86, 640,935.79 and 355,157.19 is: 490,320.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,253.86 : 640,935.79 = 355,157.19 : x
  2. Step 2: Convert to fraction form
    464,253.86/640,935.79 = 355,157.19/x
  3. Step 3: Cross multiply
    464,253.86x = 640,935.79 × 355,157.19
  4. Step 4: Simplify right side
    464,253.86x = 227,632,953,258.94
  5. Step 5: Solve for x
    x = 227,632,953,258.94/464,253.86
  6. Step 6: Final answer
    x = 490,320.00

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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.