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Finding the Fourth Proportional to 201,368.30, 302,708.55 and 142,610.90

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Solution

The fourth proportional to 201,368.30, 302,708.55 and 142,610.90 is: 214,381.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,368.30 : 302,708.55 = 142,610.90 : x
  2. Step 2: Convert to fraction form
    201,368.30/302,708.55 = 142,610.90/x
  3. Step 3: Cross multiply
    201,368.30x = 302,708.55 × 142,610.90
  4. Step 4: Simplify right side
    201,368.30x = 43,169,538,753.20
  5. Step 5: Solve for x
    x = 43,169,538,753.20/201,368.30
  6. Step 6: Final answer
    x = 214,381.01

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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.