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Finding the Fourth Proportional to 303,355.40, 455,033.30 and 125,814.74

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Solution

The fourth proportional to 303,355.40, 455,033.30 and 125,814.74 is: 188,722.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,355.40 : 455,033.30 = 125,814.74 : x
  2. Step 2: Convert to fraction form
    303,355.40/455,033.30 = 125,814.74/x
  3. Step 3: Cross multiply
    303,355.40x = 455,033.30 × 125,814.74
  4. Step 4: Simplify right side
    303,355.40x = 57,249,893,426.60
  5. Step 5: Solve for x
    x = 57,249,893,426.60/303,355.40
  6. Step 6: Final answer
    x = 188,722.19

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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.