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Finding the Fourth Proportional to 303,407.40, 455,220.45 and 126,041.70

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Solution

The fourth proportional to 303,407.40, 455,220.45 and 126,041.70 is: 189,107.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,407.40 : 455,220.45 = 126,041.70 : x
  2. Step 2: Convert to fraction form
    303,407.40/455,220.45 = 126,041.70/x
  3. Step 3: Cross multiply
    303,407.40x = 455,220.45 × 126,041.70
  4. Step 4: Simplify right side
    303,407.40x = 57,376,759,392.77
  5. Step 5: Solve for x
    x = 57,376,759,392.77/303,407.40
  6. Step 6: Final answer
    x = 189,107.98

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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.