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Finding the Fourth Proportional to 260,022.40, 390,325.20 and 201,119.20

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Solution

The fourth proportional to 260,022.40, 390,325.20 and 201,119.20 is: 301,904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,022.40 : 390,325.20 = 201,119.20 : x
  2. Step 2: Convert to fraction form
    260,022.40/390,325.20 = 201,119.20/x
  3. Step 3: Cross multiply
    260,022.40x = 390,325.20 × 201,119.20
  4. Step 4: Simplify right side
    260,022.40x = 78,501,891,963.84
  5. Step 5: Solve for x
    x = 78,501,891,963.84/260,022.40
  6. Step 6: Final answer
    x = 301,904.34

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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.