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Finding the Fourth Proportional to 259,962.40, 390,235.20 and 201,059.20

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Solution

The fourth proportional to 259,962.40, 390,235.20 and 201,059.20 is: 301,814.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,962.40 : 390,235.20 = 201,059.20 : x
  2. Step 2: Convert to fraction form
    259,962.40/390,235.20 = 201,059.20/x
  3. Step 3: Cross multiply
    259,962.40x = 390,235.20 × 201,059.20
  4. Step 4: Simplify right side
    259,962.40x = 78,460,377,123.84
  5. Step 5: Solve for x
    x = 78,460,377,123.84/259,962.40
  6. Step 6: Final answer
    x = 301,814.33

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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.