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Finding the Fourth Proportional to 201,915.51, 302,862.30 and 61,663.20

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Solution

The fourth proportional to 201,915.51, 302,862.30 and 61,663.20 is: 92,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,915.51 : 302,862.30 = 61,663.20 : x
  2. Step 2: Convert to fraction form
    201,915.51/302,862.30 = 61,663.20/x
  3. Step 3: Cross multiply
    201,915.51x = 302,862.30 × 61,663.20
  4. Step 4: Simplify right side
    201,915.51x = 18,675,458,577.36
  5. Step 5: Solve for x
    x = 18,675,458,577.36/201,915.51
  6. Step 6: Final answer
    x = 92,491.45

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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.