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Finding the Fourth Proportional to 640,073.12, 883,327.74 and 368,141.10

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Solution

The fourth proportional to 640,073.12, 883,327.74 and 368,141.10 is: 508,050.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,073.12 : 883,327.74 = 368,141.10 : x
  2. Step 2: Convert to fraction form
    640,073.12/883,327.74 = 368,141.10/x
  3. Step 3: Cross multiply
    640,073.12x = 883,327.74 × 368,141.10
  4. Step 4: Simplify right side
    640,073.12x = 325,189,245,864.11
  5. Step 5: Solve for x
    x = 325,189,245,864.11/640,073.12
  6. Step 6: Final answer
    x = 508,050.15

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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.