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Finding the Fourth Proportional to 207,128.40, 310,692.60 and 59,384.40

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Solution

The fourth proportional to 207,128.40, 310,692.60 and 59,384.40 is: 89,076.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,128.40 : 310,692.60 = 59,384.40 : x
  2. Step 2: Convert to fraction form
    207,128.40/310,692.60 = 59,384.40/x
  3. Step 3: Cross multiply
    207,128.40x = 310,692.60 × 59,384.40
  4. Step 4: Simplify right side
    207,128.40x = 18,450,293,635.44
  5. Step 5: Solve for x
    x = 18,450,293,635.44/207,128.40
  6. Step 6: Final answer
    x = 89,076.60

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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.