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Finding the Fourth Proportional to 297,259.41, 445,889.42 and 139,488.02

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Solution

The fourth proportional to 297,259.41, 445,889.42 and 139,488.02 is: 209,232.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,259.41 : 445,889.42 = 139,488.02 : x
  2. Step 2: Convert to fraction form
    297,259.41/445,889.42 = 139,488.02/x
  3. Step 3: Cross multiply
    297,259.41x = 445,889.42 × 139,488.02
  4. Step 4: Simplify right side
    297,259.41x = 62,196,231,551.60
  5. Step 5: Solve for x
    x = 62,196,231,551.60/297,259.41
  6. Step 6: Final answer
    x = 209,232.17

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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.