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Finding the Fourth Proportional to 395,197.82, 545,227.10 and 259,307.21

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Solution

The fourth proportional to 395,197.82, 545,227.10 and 259,307.21 is: 357,748.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,197.82 : 545,227.10 = 259,307.21 : x
  2. Step 2: Convert to fraction form
    395,197.82/545,227.10 = 259,307.21/x
  3. Step 3: Cross multiply
    395,197.82x = 545,227.10 × 259,307.21
  4. Step 4: Simplify right side
    395,197.82x = 141,381,316,089.42
  5. Step 5: Solve for x
    x = 141,381,316,089.42/395,197.82
  6. Step 6: Final answer
    x = 357,748.22

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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.