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Finding the Fourth Proportional to 256,298.88, 384,530.58 and 123,188.79

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Solution

The fourth proportional to 256,298.88, 384,530.58 and 123,188.79 is: 184,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,298.88 : 384,530.58 = 123,188.79 : x
  2. Step 2: Convert to fraction form
    256,298.88/384,530.58 = 123,188.79/x
  3. Step 3: Cross multiply
    256,298.88x = 384,530.58 × 123,188.79
  4. Step 4: Simplify right side
    256,298.88x = 47,369,856,868.20
  5. Step 5: Solve for x
    x = 47,369,856,868.20/256,298.88
  6. Step 6: Final answer
    x = 184,822.72

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1.5x scale

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.