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Finding the Fourth Proportional to 279,022.50, 385,049.14 and 151,698.09

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Solution

The fourth proportional to 279,022.50, 385,049.14 and 151,698.09 is: 209,342.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,022.50 : 385,049.14 = 151,698.09 : x
  2. Step 2: Convert to fraction form
    279,022.50/385,049.14 = 151,698.09/x
  3. Step 3: Cross multiply
    279,022.50x = 385,049.14 × 151,698.09
  4. Step 4: Simplify right side
    279,022.50x = 58,411,219,094.14
  5. Step 5: Solve for x
    x = 58,411,219,094.14/279,022.50
  6. Step 6: Final answer
    x = 209,342.33

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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.