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Finding the Fourth Proportional to 455,161.20, 628,109.40 and 253,952.88

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Solution

The fourth proportional to 455,161.20, 628,109.40 and 253,952.88 is: 350,447.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,161.20 : 628,109.40 = 253,952.88 : x
  2. Step 2: Convert to fraction form
    455,161.20/628,109.40 = 253,952.88/x
  3. Step 3: Cross multiply
    455,161.20x = 628,109.40 × 253,952.88
  4. Step 4: Simplify right side
    455,161.20x = 159,510,191,085.07
  5. Step 5: Solve for x
    x = 159,510,191,085.07/455,161.20
  6. Step 6: Final answer
    x = 350,447.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.