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Finding the Fourth Proportional to 286,700.06, 395,647.56 and 157,646.86

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Solution

The fourth proportional to 286,700.06, 395,647.56 and 157,646.86 is: 217,553.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,700.06 : 395,647.56 = 157,646.86 : x
  2. Step 2: Convert to fraction form
    286,700.06/395,647.56 = 157,646.86/x
  3. Step 3: Cross multiply
    286,700.06x = 395,647.56 × 157,646.86
  4. Step 4: Simplify right side
    286,700.06x = 62,372,595,500.66
  5. Step 5: Solve for x
    x = 62,372,595,500.66/286,700.06
  6. Step 6: Final answer
    x = 217,553.48

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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.