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Finding the Fourth Proportional to 303,713.40, 455,559.30 and 137,501.40

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Solution

The fourth proportional to 303,713.40, 455,559.30 and 137,501.40 is: 206,247.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,713.40 : 455,559.30 = 137,501.40 : x
  2. Step 2: Convert to fraction form
    303,713.40/455,559.30 = 137,501.40/x
  3. Step 3: Cross multiply
    303,713.40x = 455,559.30 × 137,501.40
  4. Step 4: Simplify right side
    303,713.40x = 62,640,041,533.02
  5. Step 5: Solve for x
    x = 62,640,041,533.02/303,713.40
  6. Step 6: Final answer
    x = 206,247.21

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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.