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Finding the Fourth Proportional to 425,810.14, 637,992.15 and 256,975.69

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Solution

The fourth proportional to 425,810.14, 637,992.15 and 256,975.69 is: 385,027.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,810.14 : 637,992.15 = 256,975.69 : x
  2. Step 2: Convert to fraction form
    425,810.14/637,992.15 = 256,975.69/x
  3. Step 3: Cross multiply
    425,810.14x = 637,992.15 × 256,975.69
  4. Step 4: Simplify right side
    425,810.14x = 163,948,472,960.83
  5. Step 5: Solve for x
    x = 163,948,472,960.83/425,810.14
  6. Step 6: Final answer
    x = 385,027.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.