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Finding the Fourth Proportional to 449,065.92, 619,710.81 and 306,075.66

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Solution

The fourth proportional to 449,065.92, 619,710.81 and 306,075.66 is: 422,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,065.92 : 619,710.81 = 306,075.66 : x
  2. Step 2: Convert to fraction form
    449,065.92/619,710.81 = 306,075.66/x
  3. Step 3: Cross multiply
    449,065.92x = 619,710.81 × 306,075.66
  4. Step 4: Simplify right side
    449,065.92x = 189,678,395,179.89
  5. Step 5: Solve for x
    x = 189,678,395,179.89/449,065.92
  6. Step 6: Final answer
    x = 422,384.30

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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.