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Finding the Fourth Proportional to 203,587.68, 305,376.93 and 70,459.86

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Solution

The fourth proportional to 203,587.68, 305,376.93 and 70,459.86 is: 105,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,587.68 : 305,376.93 = 70,459.86 : x
  2. Step 2: Convert to fraction form
    203,587.68/305,376.93 = 70,459.86/x
  3. Step 3: Cross multiply
    203,587.68x = 305,376.93 × 70,459.86
  4. Step 4: Simplify right side
    203,587.68x = 21,516,815,735.03
  5. Step 5: Solve for x
    x = 21,516,815,735.03/203,587.68
  6. Step 6: Final answer
    x = 105,688.20

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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.