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Finding the Fourth Proportional to 308,482.95, 425,728.17 and 172,529.55

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Solution

The fourth proportional to 308,482.95, 425,728.17 and 172,529.55 is: 238,102.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,482.95 : 425,728.17 = 172,529.55 : x
  2. Step 2: Convert to fraction form
    308,482.95/425,728.17 = 172,529.55/x
  3. Step 3: Cross multiply
    308,482.95x = 425,728.17 × 172,529.55
  4. Step 4: Simplify right side
    308,482.95x = 73,450,689,592.42
  5. Step 5: Solve for x
    x = 73,450,689,592.42/308,482.95
  6. Step 6: Final answer
    x = 238,102.91

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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.