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Finding the Fourth Proportional to 201,215.10, 301,859.10 and 101,123.40

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Solution

The fourth proportional to 201,215.10, 301,859.10 and 101,123.40 is: 151,703.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,215.10 : 301,859.10 = 101,123.40 : x
  2. Step 2: Convert to fraction form
    201,215.10/301,859.10 = 101,123.40/x
  3. Step 3: Cross multiply
    201,215.10x = 301,859.10 × 101,123.40
  4. Step 4: Simplify right side
    201,215.10x = 30,525,018,512.94
  5. Step 5: Solve for x
    x = 30,525,018,512.94/201,215.10
  6. Step 6: Final answer
    x = 151,703.42

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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.