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Finding the Fourth Proportional to 205,056.80, 307,527.60 and 64,858.40

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Solution

The fourth proportional to 205,056.80, 307,527.60 and 64,858.40 is: 97,269.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,056.80 : 307,527.60 = 64,858.40 : x
  2. Step 2: Convert to fraction form
    205,056.80/307,527.60 = 64,858.40/x
  3. Step 3: Cross multiply
    205,056.80x = 307,527.60 × 64,858.40
  4. Step 4: Simplify right side
    205,056.80x = 19,945,748,091.84
  5. Step 5: Solve for x
    x = 19,945,748,091.84/205,056.80
  6. Step 6: Final answer
    x = 97,269.38

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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.