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Finding the Fourth Proportional to 445,119.84, 667,721.16 and 145,602.36

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Solution

The fourth proportional to 445,119.84, 667,721.16 and 145,602.36 is: 218,417.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,119.84 : 667,721.16 = 145,602.36 : x
  2. Step 2: Convert to fraction form
    445,119.84/667,721.16 = 145,602.36/x
  3. Step 3: Cross multiply
    445,119.84x = 667,721.16 × 145,602.36
  4. Step 4: Simplify right side
    445,119.84x = 97,221,776,717.94
  5. Step 5: Solve for x
    x = 97,221,776,717.94/445,119.84
  6. Step 6: Final answer
    x = 218,417.08

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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.