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Finding the Fourth Proportional to 364,802.78, 547,259.01 and 128,103.80

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Solution

The fourth proportional to 364,802.78, 547,259.01 and 128,103.80 is: 192,174.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,802.78 : 547,259.01 = 128,103.80 : x
  2. Step 2: Convert to fraction form
    364,802.78/547,259.01 = 128,103.80/x
  3. Step 3: Cross multiply
    364,802.78x = 547,259.01 × 128,103.80
  4. Step 4: Simplify right side
    364,802.78x = 70,105,958,765.24
  5. Step 5: Solve for x
    x = 70,105,958,765.24/364,802.78
  6. Step 6: Final answer
    x = 192,174.96

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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.