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Finding the Fourth Proportional to 407,681.40, 611,552.18 and 108,155.35

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Solution

The fourth proportional to 407,681.40, 611,552.18 and 108,155.35 is: 162,241.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,681.40 : 611,552.18 = 108,155.35 : x
  2. Step 2: Convert to fraction form
    407,681.40/611,552.18 = 108,155.35/x
  3. Step 3: Cross multiply
    407,681.40x = 611,552.18 × 108,155.35
  4. Step 4: Simplify right side
    407,681.40x = 66,142,640,497.62
  5. Step 5: Solve for x
    x = 66,142,640,497.62/407,681.40
  6. Step 6: Final answer
    x = 162,241.00

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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.