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Finding the Fourth Proportional to 303,778.80, 455,668.20 and 93,389.40

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Solution

The fourth proportional to 303,778.80, 455,668.20 and 93,389.40 is: 140,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,778.80 : 455,668.20 = 93,389.40 : x
  2. Step 2: Convert to fraction form
    303,778.80/455,668.20 = 93,389.40/x
  3. Step 3: Cross multiply
    303,778.80x = 455,668.20 × 93,389.40
  4. Step 4: Simplify right side
    303,778.80x = 42,554,579,797.08
  5. Step 5: Solve for x
    x = 42,554,579,797.08/303,778.80
  6. Step 6: Final answer
    x = 140,084.10

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1.5x scale

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.