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Finding the Fourth Proportional to 611,670.08, 917,505.10 and 190,982

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Solution

The fourth proportional to 611,670.08, 917,505.10 and 190,982 is: 286,472.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,670.08 : 917,505.10 = 190,982 : x
  2. Step 2: Convert to fraction form
    611,670.08/917,505.10 = 190,982/x
  3. Step 3: Cross multiply
    611,670.08x = 917,505.10 × 190,982
  4. Step 4: Simplify right side
    611,670.08x = 175,226,959,008.20
  5. Step 5: Solve for x
    x = 175,226,959,008.20/611,670.08
  6. Step 6: Final answer
    x = 286,472.99

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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.