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Finding the Fourth Proportional to 640,003.19, 883,231.22 and 368,071.30

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Solution

The fourth proportional to 640,003.19, 883,231.22 and 368,071.30 is: 507,953.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,003.19 : 883,231.22 = 368,071.30 : x
  2. Step 2: Convert to fraction form
    640,003.19/883,231.22 = 368,071.30/x
  3. Step 3: Cross multiply
    640,003.19x = 883,231.22 × 368,071.30
  4. Step 4: Simplify right side
    640,003.19x = 325,092,065,370.20
  5. Step 5: Solve for x
    x = 325,092,065,370.20/640,003.19
  6. Step 6: Final answer
    x = 507,953.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.