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Finding the Fourth Proportional to 543,339.90, 815,005.80 and 164,259.90

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Solution

The fourth proportional to 543,339.90, 815,005.80 and 164,259.90 is: 246,388.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,339.90 : 815,005.80 = 164,259.90 : x
  2. Step 2: Convert to fraction form
    543,339.90/815,005.80 = 164,259.90/x
  3. Step 3: Cross multiply
    543,339.90x = 815,005.80 × 164,259.90
  4. Step 4: Simplify right side
    543,339.90x = 133,872,771,207.42
  5. Step 5: Solve for x
    x = 133,872,771,207.42/543,339.90
  6. Step 6: Final answer
    x = 246,388.63

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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.