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Finding the Fourth Proportional to 251,777.79, 377,528.65 and 99,820.94

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Solution

The fourth proportional to 251,777.79, 377,528.65 and 99,820.94 is: 149,676.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,777.79 : 377,528.65 = 99,820.94 : x
  2. Step 2: Convert to fraction form
    251,777.79/377,528.65 = 99,820.94/x
  3. Step 3: Cross multiply
    251,777.79x = 377,528.65 × 99,820.94
  4. Step 4: Simplify right side
    251,777.79x = 37,685,262,582.74
  5. Step 5: Solve for x
    x = 37,685,262,582.74/251,777.79
  6. Step 6: Final answer
    x = 149,676.68

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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.