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Finding the Fourth Proportional to 199,680.32, 299,420.32 and 66,513.76

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Solution

The fourth proportional to 199,680.32, 299,420.32 and 66,513.76 is: 99,737.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,680.32 : 299,420.32 = 66,513.76 : x
  2. Step 2: Convert to fraction form
    199,680.32/299,420.32 = 66,513.76/x
  3. Step 3: Cross multiply
    199,680.32x = 299,420.32 × 66,513.76
  4. Step 4: Simplify right side
    199,680.32x = 19,915,571,303.60
  5. Step 5: Solve for x
    x = 19,915,571,303.60/199,680.32
  6. Step 6: Final answer
    x = 99,737.28

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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.