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Finding the Fourth Proportional to 395,855, 546,314.46 and 217,041.56

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Solution

The fourth proportional to 395,855, 546,314.46 and 217,041.56 is: 299,536.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,855 : 546,314.46 = 217,041.56 : x
  2. Step 2: Convert to fraction form
    395,855/546,314.46 = 217,041.56/x
  3. Step 3: Cross multiply
    395,855x = 546,314.46 × 217,041.56
  4. Step 4: Simplify right side
    395,855x = 118,572,942,648.96
  5. Step 5: Solve for x
    x = 118,572,942,648.96/395,855
  6. Step 6: Final answer
    x = 299,536.30

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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.