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Finding the Fourth Proportional to 464,328.30, 640,909.12 and 303,208.37

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Solution

The fourth proportional to 464,328.30, 640,909.12 and 303,208.37 is: 418,516.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,328.30 : 640,909.12 = 303,208.37 : x
  2. Step 2: Convert to fraction form
    464,328.30/640,909.12 = 303,208.37/x
  3. Step 3: Cross multiply
    464,328.30x = 640,909.12 × 303,208.37
  4. Step 4: Simplify right side
    464,328.30x = 194,329,009,593.33
  5. Step 5: Solve for x
    x = 194,329,009,593.33/464,328.30
  6. Step 6: Final answer
    x = 418,516.40

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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.