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Finding the Fourth Proportional to 308,410.16, 425,441.85 and 187,588.40

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Solution

The fourth proportional to 308,410.16, 425,441.85 and 187,588.40 is: 258,772.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,410.16 : 425,441.85 = 187,588.40 : x
  2. Step 2: Convert to fraction form
    308,410.16/425,441.85 = 187,588.40/x
  3. Step 3: Cross multiply
    308,410.16x = 425,441.85 × 187,588.40
  4. Step 4: Simplify right side
    308,410.16x = 79,807,955,934.54
  5. Step 5: Solve for x
    x = 79,807,955,934.54/308,410.16
  6. Step 6: Final answer
    x = 258,772.14

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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.