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Finding the Fourth Proportional to 298,145.52, 447,123.42 and 98,428.68

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Solution

The fourth proportional to 298,145.52, 447,123.42 and 98,428.68 is: 147,611.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,145.52 : 447,123.42 = 98,428.68 : x
  2. Step 2: Convert to fraction form
    298,145.52/447,123.42 = 98,428.68/x
  3. Step 3: Cross multiply
    298,145.52x = 447,123.42 × 98,428.68
  4. Step 4: Simplify right side
    298,145.52x = 44,009,768,027.69
  5. Step 5: Solve for x
    x = 44,009,768,027.69/298,145.52
  6. Step 6: Final answer
    x = 147,611.70

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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.