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Finding the Fourth Proportional to 308,395.60, 425,588.60 and 170,572.21

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Solution

The fourth proportional to 308,395.60, 425,588.60 and 170,572.21 is: 235,391.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,395.60 : 425,588.60 = 170,572.21 : x
  2. Step 2: Convert to fraction form
    308,395.60/425,588.60 = 170,572.21/x
  3. Step 3: Cross multiply
    308,395.60x = 425,588.60 × 170,572.21
  4. Step 4: Simplify right side
    308,395.60x = 72,593,588,263.92
  5. Step 5: Solve for x
    x = 72,593,588,263.92/308,395.60
  6. Step 6: Final answer
    x = 235,391.13

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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.