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Finding the Fourth Proportional to 299,276.88, 448,910.51 and 139,263.35

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Solution

The fourth proportional to 299,276.88, 448,910.51 and 139,263.35 is: 208,892.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,276.88 : 448,910.51 = 139,263.35 : x
  2. Step 2: Convert to fraction form
    299,276.88/448,910.51 = 139,263.35/x
  3. Step 3: Cross multiply
    299,276.88x = 448,910.51 × 139,263.35
  4. Step 4: Simplify right side
    299,276.88x = 62,516,781,057.06
  5. Step 5: Solve for x
    x = 62,516,781,057.06/299,276.88
  6. Step 6: Final answer
    x = 208,892.79

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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.