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Finding the Fourth Proportional to 201,858.40, 302,714.70 and 101,985.40

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Solution

The fourth proportional to 201,858.40, 302,714.70 and 101,985.40 is: 152,941.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,858.40 : 302,714.70 = 101,985.40 : x
  2. Step 2: Convert to fraction form
    201,858.40/302,714.70 = 101,985.40/x
  3. Step 3: Cross multiply
    201,858.40x = 302,714.70 × 101,985.40
  4. Step 4: Simplify right side
    201,858.40x = 30,872,479,765.38
  5. Step 5: Solve for x
    x = 30,872,479,765.38/201,858.40
  6. Step 6: Final answer
    x = 152,941.27

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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.