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Finding the Fourth Proportional to 349,807.20, 490,663.20 and 349,807.20

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Solution

The fourth proportional to 349,807.20, 490,663.20 and 349,807.20 is: 490,663.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,807.20 : 490,663.20 = 349,807.20 : x
  2. Step 2: Convert to fraction form
    349,807.20/490,663.20 = 349,807.20/x
  3. Step 3: Cross multiply
    349,807.20x = 490,663.20 × 349,807.20
  4. Step 4: Simplify right side
    349,807.20x = 171,637,520,135.04
  5. Step 5: Solve for x
    x = 171,637,520,135.04/349,807.20
  6. Step 6: Final answer
    x = 490,663.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.