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Finding the Fourth Proportional to 455,008.72, 682,220.76 and 188,952.88

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Solution

The fourth proportional to 455,008.72, 682,220.76 and 188,952.88 is: 283,307.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,008.72 : 682,220.76 = 188,952.88 : x
  2. Step 2: Convert to fraction form
    455,008.72/682,220.76 = 188,952.88/x
  3. Step 3: Cross multiply
    455,008.72x = 682,220.76 × 188,952.88
  4. Step 4: Simplify right side
    455,008.72x = 128,907,577,397.79
  5. Step 5: Solve for x
    x = 128,907,577,397.79/455,008.72
  6. Step 6: Final answer
    x = 283,307.93

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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.