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Finding the Fourth Proportional to 303,479.90, 454,673.10 and 145,359.80

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Solution

The fourth proportional to 303,479.90, 454,673.10 and 145,359.80 is: 217,777.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,479.90 : 454,673.10 = 145,359.80 : x
  2. Step 2: Convert to fraction form
    303,479.90/454,673.10 = 145,359.80/x
  3. Step 3: Cross multiply
    303,479.90x = 454,673.10 × 145,359.80
  4. Step 4: Simplify right side
    303,479.90x = 66,091,190,881.38
  5. Step 5: Solve for x
    x = 66,091,190,881.38/303,479.90
  6. Step 6: Final answer
    x = 217,777.82

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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.