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Finding the Fourth Proportional to 253,781.47, 380,638.79 and 120,746.26

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Solution

The fourth proportional to 253,781.47, 380,638.79 and 120,746.26 is: 181,103.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,781.47 : 380,638.79 = 120,746.26 : x
  2. Step 2: Convert to fraction form
    253,781.47/380,638.79 = 120,746.26/x
  3. Step 3: Cross multiply
    253,781.47x = 380,638.79 × 120,746.26
  4. Step 4: Simplify right side
    253,781.47x = 45,960,710,303.43
  5. Step 5: Solve for x
    x = 45,960,710,303.43/253,781.47
  6. Step 6: Final answer
    x = 181,103.49

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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.