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Finding the Fourth Proportional to 257,161.47, 385,555.37 and 107,444.58

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Solution

The fourth proportional to 257,161.47, 385,555.37 and 107,444.58 is: 161,088.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,161.47 : 385,555.37 = 107,444.58 : x
  2. Step 2: Convert to fraction form
    257,161.47/385,555.37 = 107,444.58/x
  3. Step 3: Cross multiply
    257,161.47x = 385,555.37 × 107,444.58
  4. Step 4: Simplify right side
    257,161.47x = 41,425,834,796.39
  5. Step 5: Solve for x
    x = 41,425,834,796.39/257,161.47
  6. Step 6: Final answer
    x = 161,088.81

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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.