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Finding the Fourth Proportional to 253,909.32, 380,801.28 and 104,192.16

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Solution

The fourth proportional to 253,909.32, 380,801.28 and 104,192.16 is: 156,262.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,909.32 : 380,801.28 = 104,192.16 : x
  2. Step 2: Convert to fraction form
    253,909.32/380,801.28 = 104,192.16/x
  3. Step 3: Cross multiply
    253,909.32x = 380,801.28 × 104,192.16
  4. Step 4: Simplify right side
    253,909.32x = 39,676,507,893.96
  5. Step 5: Solve for x
    x = 39,676,507,893.96/253,909.32
  6. Step 6: Final answer
    x = 156,262.51

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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.