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Finding the Fourth Proportional to 210,702.40, 316,226.40 and 203,790.40

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Solution

The fourth proportional to 210,702.40, 316,226.40 and 203,790.40 is: 305,852.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,702.40 : 316,226.40 = 203,790.40 : x
  2. Step 2: Convert to fraction form
    210,702.40/316,226.40 = 203,790.40/x
  3. Step 3: Cross multiply
    210,702.40x = 316,226.40 × 203,790.40
  4. Step 4: Simplify right side
    210,702.40x = 64,443,904,546.56
  5. Step 5: Solve for x
    x = 64,443,904,546.56/210,702.40
  6. Step 6: Final answer
    x = 305,852.73

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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.