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Finding the Fourth Proportional to 561,012.72, 841,490.40 and 205,999.44

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Solution

The fourth proportional to 561,012.72, 841,490.40 and 205,999.44 is: 308,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,012.72 : 841,490.40 = 205,999.44 : x
  2. Step 2: Convert to fraction form
    561,012.72/841,490.40 = 205,999.44/x
  3. Step 3: Cross multiply
    561,012.72x = 841,490.40 × 205,999.44
  4. Step 4: Simplify right side
    561,012.72x = 173,346,551,165.38
  5. Step 5: Solve for x
    x = 173,346,551,165.38/561,012.72
  6. Step 6: Final answer
    x = 308,988.63

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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.