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Finding the Fourth Proportional to 268,371.20, 402,300.80 and 99,846.40

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Solution

The fourth proportional to 268,371.20, 402,300.80 and 99,846.40 is: 149,674.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,371.20 : 402,300.80 = 99,846.40 : x
  2. Step 2: Convert to fraction form
    268,371.20/402,300.80 = 99,846.40/x
  3. Step 3: Cross multiply
    268,371.20x = 402,300.80 × 99,846.40
  4. Step 4: Simplify right side
    268,371.20x = 40,168,286,597.12
  5. Step 5: Solve for x
    x = 40,168,286,597.12/268,371.20
  6. Step 6: Final answer
    x = 149,674.36

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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.