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Finding the Fourth Proportional to 303,498.90, 454,701.60 and 145,378.80

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Solution

The fourth proportional to 303,498.90, 454,701.60 and 145,378.80 is: 217,806.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,498.90 : 454,701.60 = 145,378.80 : x
  2. Step 2: Convert to fraction form
    303,498.90/454,701.60 = 145,378.80/x
  3. Step 3: Cross multiply
    303,498.90x = 454,701.60 × 145,378.80
  4. Step 4: Simplify right side
    303,498.90x = 66,103,972,966.08
  5. Step 5: Solve for x
    x = 66,103,972,966.08/303,498.90
  6. Step 6: Final answer
    x = 217,806.30

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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.