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Finding the Fourth Proportional to 303,678.40, 455,506.80 and 137,466.40

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Solution

The fourth proportional to 303,678.40, 455,506.80 and 137,466.40 is: 206,194.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,678.40 : 455,506.80 = 137,466.40 : x
  2. Step 2: Convert to fraction form
    303,678.40/455,506.80 = 137,466.40/x
  3. Step 3: Cross multiply
    303,678.40x = 455,506.80 × 137,466.40
  4. Step 4: Simplify right side
    303,678.40x = 62,616,879,971.52
  5. Step 5: Solve for x
    x = 62,616,879,971.52/303,678.40
  6. Step 6: Final answer
    x = 206,194.71

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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.