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Finding the Fourth Proportional to 280,472.17, 387,082.07 and 173,039.44

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Solution

The fourth proportional to 280,472.17, 387,082.07 and 173,039.44 is: 238,813.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,472.17 : 387,082.07 = 173,039.44 : x
  2. Step 2: Convert to fraction form
    280,472.17/387,082.07 = 173,039.44/x
  3. Step 3: Cross multiply
    280,472.17x = 387,082.07 × 173,039.44
  4. Step 4: Simplify right side
    280,472.17x = 66,980,463,681.94
  5. Step 5: Solve for x
    x = 66,980,463,681.94/280,472.17
  6. Step 6: Final answer
    x = 238,813.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.