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Finding the Fourth Proportional to 303,319.60, 454,979.40 and 208,841.20

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Solution

The fourth proportional to 303,319.60, 454,979.40 and 208,841.20 is: 313,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,319.60 : 454,979.40 = 208,841.20 : x
  2. Step 2: Convert to fraction form
    303,319.60/454,979.40 = 208,841.20/x
  3. Step 3: Cross multiply
    303,319.60x = 454,979.40 × 208,841.20
  4. Step 4: Simplify right side
    303,319.60x = 95,018,443,871.28
  5. Step 5: Solve for x
    x = 95,018,443,871.28/303,319.60
  6. Step 6: Final answer
    x = 313,261.80

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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.