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Finding the Fourth Proportional to 356,659.58, 492,064.14 and 203,587.38

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Solution

The fourth proportional to 356,659.58, 492,064.14 and 203,587.38 is: 280,878.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,659.58 : 492,064.14 = 203,587.38 : x
  2. Step 2: Convert to fraction form
    356,659.58/492,064.14 = 203,587.38/x
  3. Step 3: Cross multiply
    356,659.58x = 492,064.14 × 203,587.38
  4. Step 4: Simplify right side
    356,659.58x = 100,178,049,054.55
  5. Step 5: Solve for x
    x = 100,178,049,054.55/356,659.58
  6. Step 6: Final answer
    x = 280,878.62

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1.5x scale

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.