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Finding the Fourth Proportional to 299,261.31, 448,887.50 and 139,247.63

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Solution

The fourth proportional to 299,261.31, 448,887.50 and 139,247.63 is: 208,869.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,261.31 : 448,887.50 = 139,247.63 : x
  2. Step 2: Convert to fraction form
    299,261.31/448,887.50 = 139,247.63/x
  3. Step 3: Cross multiply
    299,261.31x = 448,887.50 × 139,247.63
  4. Step 4: Simplify right side
    299,261.31x = 62,506,517,570.95
  5. Step 5: Solve for x
    x = 62,506,517,570.95/299,261.31
  6. Step 6: Final answer
    x = 208,869.36

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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.