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Finding the Fourth Proportional to 442,681.05, 662,647.08 and 239,773.21

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Solution

The fourth proportional to 442,681.05, 662,647.08 and 239,773.21 is: 358,915.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,681.05 : 662,647.08 = 239,773.21 : x
  2. Step 2: Convert to fraction form
    442,681.05/662,647.08 = 239,773.21/x
  3. Step 3: Cross multiply
    442,681.05x = 662,647.08 × 239,773.21
  4. Step 4: Simplify right side
    442,681.05x = 158,885,019,089.92
  5. Step 5: Solve for x
    x = 158,885,019,089.92/442,681.05
  6. Step 6: Final answer
    x = 358,915.34

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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.