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Finding the Fourth Proportional to 298,012.32, 447,018.44 and 87,650.28

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Solution

The fourth proportional to 298,012.32, 447,018.44 and 87,650.28 is: 131,475.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,012.32 : 447,018.44 = 87,650.28 : x
  2. Step 2: Convert to fraction form
    298,012.32/447,018.44 = 87,650.28/x
  3. Step 3: Cross multiply
    298,012.32x = 447,018.44 × 87,650.28
  4. Step 4: Simplify right side
    298,012.32x = 39,181,291,431.16
  5. Step 5: Solve for x
    x = 39,181,291,431.16/298,012.32
  6. Step 6: Final answer
    x = 131,475.41

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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.