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Finding the Fourth Proportional to 279,720.34, 386,000.64 and 158,845.66

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Solution

The fourth proportional to 279,720.34, 386,000.64 and 158,845.66 is: 219,199.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,720.34 : 386,000.64 = 158,845.66 : x
  2. Step 2: Convert to fraction form
    279,720.34/386,000.64 = 158,845.66/x
  3. Step 3: Cross multiply
    279,720.34x = 386,000.64 × 158,845.66
  4. Step 4: Simplify right side
    279,720.34x = 61,314,525,456.22
  5. Step 5: Solve for x
    x = 61,314,525,456.22/279,720.34
  6. Step 6: Final answer
    x = 219,199.38

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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.