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Finding the Fourth Proportional to 303,677.40, 455,505.30 and 137,465.40

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Solution

The fourth proportional to 303,677.40, 455,505.30 and 137,465.40 is: 206,193.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,677.40 : 455,505.30 = 137,465.40 : x
  2. Step 2: Convert to fraction form
    303,677.40/455,505.30 = 137,465.40/x
  3. Step 3: Cross multiply
    303,677.40x = 455,505.30 × 137,465.40
  4. Step 4: Simplify right side
    303,677.40x = 62,616,218,266.62
  5. Step 5: Solve for x
    x = 62,616,218,266.62/303,677.40
  6. Step 6: Final answer
    x = 206,193.21

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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.