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Finding the Fourth Proportional to 445,663.84, 668,424.12 and 130,046.80

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Solution

The fourth proportional to 445,663.84, 668,424.12 and 130,046.80 is: 195,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,663.84 : 668,424.12 = 130,046.80 : x
  2. Step 2: Convert to fraction form
    445,663.84/668,424.12 = 130,046.80/x
  3. Step 3: Cross multiply
    445,663.84x = 668,424.12 × 130,046.80
  4. Step 4: Simplify right side
    445,663.84x = 86,926,417,848.82
  5. Step 5: Solve for x
    x = 86,926,417,848.82/445,663.84
  6. Step 6: Final answer
    x = 195,049.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.