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Finding the Fourth Proportional to 303,640, 455,737.74 and 153,983.56

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Solution

The fourth proportional to 303,640, 455,737.74 and 153,983.56 is: 231,116.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,640 : 455,737.74 = 153,983.56 : x
  2. Step 2: Convert to fraction form
    303,640/455,737.74 = 153,983.56/x
  3. Step 3: Cross multiply
    303,640x = 455,737.74 × 153,983.56
  4. Step 4: Simplify right side
    303,640x = 70,176,119,631.55
  5. Step 5: Solve for x
    x = 70,176,119,631.55/303,640
  6. Step 6: Final answer
    x = 231,116.19

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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.