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Finding the Fourth Proportional to 203,421.40, 304,548.90 and 156,376.60

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Solution

The fourth proportional to 203,421.40, 304,548.90 and 156,376.60 is: 234,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,421.40 : 304,548.90 = 156,376.60 : x
  2. Step 2: Convert to fraction form
    203,421.40/304,548.90 = 156,376.60/x
  3. Step 3: Cross multiply
    203,421.40x = 304,548.90 × 156,376.60
  4. Step 4: Simplify right side
    203,421.40x = 47,624,321,515.74
  5. Step 5: Solve for x
    x = 47,624,321,515.74/203,421.40
  6. Step 6: Final answer
    x = 234,116.58

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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.