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Finding the Fourth Proportional to 356,555.79, 491,763.56 and 303,018.03

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Solution

The fourth proportional to 356,555.79, 491,763.56 and 303,018.03 is: 417,924.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,555.79 : 491,763.56 = 303,018.03 : x
  2. Step 2: Convert to fraction form
    356,555.79/491,763.56 = 303,018.03/x
  3. Step 3: Cross multiply
    356,555.79x = 491,763.56 × 303,018.03
  4. Step 4: Simplify right side
    356,555.79x = 149,013,223,661.90
  5. Step 5: Solve for x
    x = 149,013,223,661.90/356,555.79
  6. Step 6: Final answer
    x = 417,924.00

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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.