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Finding the Fourth Proportional to 640,181.34, 960,066.95 and 356,008.01

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Solution

The fourth proportional to 640,181.34, 960,066.95 and 356,008.01 is: 533,897.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,181.34 : 960,066.95 = 356,008.01 : x
  2. Step 2: Convert to fraction form
    640,181.34/960,066.95 = 356,008.01/x
  3. Step 3: Cross multiply
    640,181.34x = 960,066.95 × 356,008.01
  4. Step 4: Simplify right side
    640,181.34x = 341,791,517,755.90
  5. Step 5: Solve for x
    x = 341,791,517,755.90/640,181.34
  6. Step 6: Final answer
    x = 533,897.97

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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.