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Finding the Fourth Proportional to 360,643.40, 540,965.10 and 111,325.40

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Solution

The fourth proportional to 360,643.40, 540,965.10 and 111,325.40 is: 166,988.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,643.40 : 540,965.10 = 111,325.40 : x
  2. Step 2: Convert to fraction form
    360,643.40/540,965.10 = 111,325.40/x
  3. Step 3: Cross multiply
    360,643.40x = 540,965.10 × 111,325.40
  4. Step 4: Simplify right side
    360,643.40x = 60,223,156,143.54
  5. Step 5: Solve for x
    x = 60,223,156,143.54/360,643.40
  6. Step 6: Final answer
    x = 166,988.10

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Similar ratio
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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.