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Finding the Fourth Proportional to 299,703.20, 447,368.58 and 261,868.77

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Solution

The fourth proportional to 299,703.20, 447,368.58 and 261,868.77 is: 390,892.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,703.20 : 447,368.58 = 261,868.77 : x
  2. Step 2: Convert to fraction form
    299,703.20/447,368.58 = 261,868.77/x
  3. Step 3: Cross multiply
    299,703.20x = 447,368.58 × 261,868.77
  4. Step 4: Simplify right side
    299,703.20x = 117,151,860,245.00
  5. Step 5: Solve for x
    x = 117,151,860,245.00/299,703.20
  6. Step 6: Final answer
    x = 390,892.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.