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Finding the Fourth Proportional to 298,007.79, 447,011.57 and 87,645.74

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Solution

The fourth proportional to 298,007.79, 447,011.57 and 87,645.74 is: 131,468.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,007.79 : 447,011.57 = 87,645.74 : x
  2. Step 2: Convert to fraction form
    298,007.79/447,011.57 = 87,645.74/x
  3. Step 3: Cross multiply
    298,007.79x = 447,011.57 × 87,645.74
  4. Step 4: Simplify right side
    298,007.79x = 39,178,657,167.93
  5. Step 5: Solve for x
    x = 39,178,657,167.93/298,007.79
  6. Step 6: Final answer
    x = 131,468.57

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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.