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Finding the Fourth Proportional to 425,712.94, 637,846.78 and 256,878.49

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Solution

The fourth proportional to 425,712.94, 637,846.78 and 256,878.49 is: 384,881.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,712.94 : 637,846.78 = 256,878.49 : x
  2. Step 2: Convert to fraction form
    425,712.94/637,846.78 = 256,878.49/x
  3. Step 3: Cross multiply
    425,712.94x = 637,846.78 × 256,878.49
  4. Step 4: Simplify right side
    425,712.94x = 163,849,116,416.09
  5. Step 5: Solve for x
    x = 163,849,116,416.09/425,712.94
  6. Step 6: Final answer
    x = 384,881.69

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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.