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Finding the Fourth Proportional to 407,291.60, 610,937.40 and 218,334.80

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Solution

The fourth proportional to 407,291.60, 610,937.40 and 218,334.80 is: 327,502.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,291.60 : 610,937.40 = 218,334.80 : x
  2. Step 2: Convert to fraction form
    407,291.60/610,937.40 = 218,334.80/x
  3. Step 3: Cross multiply
    407,291.60x = 610,937.40 × 218,334.80
  4. Step 4: Simplify right side
    407,291.60x = 133,388,895,041.52
  5. Step 5: Solve for x
    x = 133,388,895,041.52/407,291.60
  6. Step 6: Final answer
    x = 327,502.20

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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.