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Finding the Fourth Proportional to 260,055.20, 390,082.80 and 185,016.80

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Solution

The fourth proportional to 260,055.20, 390,082.80 and 185,016.80 is: 277,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,055.20 : 390,082.80 = 185,016.80 : x
  2. Step 2: Convert to fraction form
    260,055.20/390,082.80 = 185,016.80/x
  3. Step 3: Cross multiply
    260,055.20x = 390,082.80 × 185,016.80
  4. Step 4: Simplify right side
    260,055.20x = 72,171,871,391.04
  5. Step 5: Solve for x
    x = 72,171,871,391.04/260,055.20
  6. Step 6: Final answer
    x = 277,525.20

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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.