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Finding the Fourth Proportional to 201,328.90, 301,801.35 and 74,935.30

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Solution

The fourth proportional to 201,328.90, 301,801.35 and 74,935.30 is: 112,331.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,328.90 : 301,801.35 = 74,935.30 : x
  2. Step 2: Convert to fraction form
    201,328.90/301,801.35 = 74,935.30/x
  3. Step 3: Cross multiply
    201,328.90x = 301,801.35 × 74,935.30
  4. Step 4: Simplify right side
    201,328.90x = 22,615,574,702.66
  5. Step 5: Solve for x
    x = 22,615,574,702.66/201,328.90
  6. Step 6: Final answer
    x = 112,331.49

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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.