Home / 256,964.40-385,224.96-123,661.28

Finding the Fourth Proportional to 256,964.40, 385,224.96 and 123,661.28

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Solution

The fourth proportional to 256,964.40, 385,224.96 and 123,661.28 is: 185,385.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,964.40 : 385,224.96 = 123,661.28 : x
  2. Step 2: Convert to fraction form
    256,964.40/385,224.96 = 123,661.28/x
  3. Step 3: Cross multiply
    256,964.40x = 385,224.96 × 123,661.28
  4. Step 4: Simplify right side
    256,964.40x = 47,637,411,641.55
  5. Step 5: Solve for x
    x = 47,637,411,641.55/256,964.40
  6. Step 6: Final answer
    x = 185,385.26

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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.