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Finding the Fourth Proportional to 298,008.79, 447,013.06 and 87,646.74

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Solution

The fourth proportional to 298,008.79, 447,013.06 and 87,646.74 is: 131,470.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,008.79 : 447,013.06 = 87,646.74 : x
  2. Step 2: Convert to fraction form
    298,008.79/447,013.06 = 87,646.74/x
  3. Step 3: Cross multiply
    298,008.79x = 447,013.06 × 87,646.74
  4. Step 4: Simplify right side
    298,008.79x = 39,179,237,446.42
  5. Step 5: Solve for x
    x = 39,179,237,446.42/298,008.79
  6. Step 6: Final answer
    x = 131,470.07

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1.5x scale

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.