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Finding the Fourth Proportional to 298,840.41, 448,265.48 and 85,607.49

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Solution

The fourth proportional to 298,840.41, 448,265.48 and 85,607.49 is: 128,412.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,840.41 : 448,265.48 = 85,607.49 : x
  2. Step 2: Convert to fraction form
    298,840.41/448,265.48 = 85,607.49/x
  3. Step 3: Cross multiply
    298,840.41x = 448,265.48 × 85,607.49
  4. Step 4: Simplify right side
    298,840.41x = 38,374,882,168.41
  5. Step 5: Solve for x
    x = 38,374,882,168.41/298,840.41
  6. Step 6: Final answer
    x = 128,412.63

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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.