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Finding the Fourth Proportional to 286,775.30, 395,729.35 and 157,722.73

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Solution

The fourth proportional to 286,775.30, 395,729.35 and 157,722.73 is: 217,646.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,775.30 : 395,729.35 = 157,722.73 : x
  2. Step 2: Convert to fraction form
    286,775.30/395,729.35 = 157,722.73/x
  3. Step 3: Cross multiply
    286,775.30x = 395,729.35 × 157,722.73
  4. Step 4: Simplify right side
    286,775.30x = 62,415,512,039.50
  5. Step 5: Solve for x
    x = 62,415,512,039.50/286,775.30
  6. Step 6: Final answer
    x = 217,646.05

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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.