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Finding the Fourth Proportional to 238,446.40, 329,084.64 and 143,005.60

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Solution

The fourth proportional to 238,446.40, 329,084.64 and 143,005.60 is: 197,364.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,446.40 : 329,084.64 = 143,005.60 : x
  2. Step 2: Convert to fraction form
    238,446.40/329,084.64 = 143,005.60/x
  3. Step 3: Cross multiply
    238,446.40x = 329,084.64 × 143,005.60
  4. Step 4: Simplify right side
    238,446.40x = 47,060,946,393.98
  5. Step 5: Solve for x
    x = 47,060,946,393.98/238,446.40
  6. Step 6: Final answer
    x = 197,364.89

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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.