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Finding the Fourth Proportional to 298,857.50, 448,284.02 and 85,625.59

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Solution

The fourth proportional to 298,857.50, 448,284.02 and 85,625.59 is: 128,437.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,857.50 : 448,284.02 = 85,625.59 : x
  2. Step 2: Convert to fraction form
    298,857.50/448,284.02 = 85,625.59/x
  3. Step 3: Cross multiply
    298,857.50x = 448,284.02 × 85,625.59
  4. Step 4: Simplify right side
    298,857.50x = 38,384,583,700.07
  5. Step 5: Solve for x
    x = 38,384,583,700.07/298,857.50
  6. Step 6: Final answer
    x = 128,437.75

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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.