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Finding the Fourth Proportional to 288,491.94, 398,120.09 and 157,672.23

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Solution

The fourth proportional to 288,491.94, 398,120.09 and 157,672.23 is: 217,588.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,491.94 : 398,120.09 = 157,672.23 : x
  2. Step 2: Convert to fraction form
    288,491.94/398,120.09 = 157,672.23/x
  3. Step 3: Cross multiply
    288,491.94x = 398,120.09 × 157,672.23
  4. Step 4: Simplify right side
    288,491.94x = 62,772,482,792.28
  5. Step 5: Solve for x
    x = 62,772,482,792.28/288,491.94
  6. Step 6: Final answer
    x = 217,588.34

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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.