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Finding the Fourth Proportional to 303,801.19, 455,390.73 and 126,411.19

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Solution

The fourth proportional to 303,801.19, 455,390.73 and 126,411.19 is: 189,487.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,801.19 : 455,390.73 = 126,411.19 : x
  2. Step 2: Convert to fraction form
    303,801.19/455,390.73 = 126,411.19/x
  3. Step 3: Cross multiply
    303,801.19x = 455,390.73 × 126,411.19
  4. Step 4: Simplify right side
    303,801.19x = 57,566,482,955.79
  5. Step 5: Solve for x
    x = 57,566,482,955.79/303,801.19
  6. Step 6: Final answer
    x = 189,487.35

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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.