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Finding the Fourth Proportional to 266,702.40, 400,312.80 and 161,726.40

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Solution

The fourth proportional to 266,702.40, 400,312.80 and 161,726.40 is: 242,746.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,702.40 : 400,312.80 = 161,726.40 : x
  2. Step 2: Convert to fraction form
    266,702.40/400,312.80 = 161,726.40/x
  3. Step 3: Cross multiply
    266,702.40x = 400,312.80 × 161,726.40
  4. Step 4: Simplify right side
    266,702.40x = 64,741,148,017.92
  5. Step 5: Solve for x
    x = 64,741,148,017.92/266,702.40
  6. Step 6: Final answer
    x = 242,746.78

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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.