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Finding the Fourth Proportional to 253,200.90, 379,801.35 and 163,971.30

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Solution

The fourth proportional to 253,200.90, 379,801.35 and 163,971.30 is: 245,956.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,200.90 : 379,801.35 = 163,971.30 : x
  2. Step 2: Convert to fraction form
    253,200.90/379,801.35 = 163,971.30/x
  3. Step 3: Cross multiply
    253,200.90x = 379,801.35 × 163,971.30
  4. Step 4: Simplify right side
    253,200.90x = 62,276,521,101.26
  5. Step 5: Solve for x
    x = 62,276,521,101.26/253,200.90
  6. Step 6: Final answer
    x = 245,956.95

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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.