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Finding the Fourth Proportional to 308,585.88, 425,812.14 and 172,626.84

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Solution

The fourth proportional to 308,585.88, 425,812.14 and 172,626.84 is: 238,204.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,585.88 : 425,812.14 = 172,626.84 : x
  2. Step 2: Convert to fraction form
    308,585.88/425,812.14 = 172,626.84/x
  3. Step 3: Cross multiply
    308,585.88x = 425,812.14 × 172,626.84
  4. Step 4: Simplify right side
    308,585.88x = 73,506,604,161.84
  5. Step 5: Solve for x
    x = 73,506,604,161.84/308,585.88
  6. Step 6: Final answer
    x = 238,204.69

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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.