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Finding the Fourth Proportional to 423,399.41, 584,299.87 and 239,637.98

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Solution

The fourth proportional to 423,399.41, 584,299.87 and 239,637.98 is: 330,705.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,399.41 : 584,299.87 = 239,637.98 : x
  2. Step 2: Convert to fraction form
    423,399.41/584,299.87 = 239,637.98/x
  3. Step 3: Cross multiply
    423,399.41x = 584,299.87 × 239,637.98
  4. Step 4: Simplify right side
    423,399.41x = 140,020,437,040.47
  5. Step 5: Solve for x
    x = 140,020,437,040.47/423,399.41
  6. Step 6: Final answer
    x = 330,705.32

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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.