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Finding the Fourth Proportional to 246,909.30, 370,376.10 and 128,811.30

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Solution

The fourth proportional to 246,909.30, 370,376.10 and 128,811.30 is: 193,223.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,909.30 : 370,376.10 = 128,811.30 : x
  2. Step 2: Convert to fraction form
    246,909.30/370,376.10 = 128,811.30/x
  3. Step 3: Cross multiply
    246,909.30x = 370,376.10 × 128,811.30
  4. Step 4: Simplify right side
    246,909.30x = 47,708,626,929.93
  5. Step 5: Solve for x
    x = 47,708,626,929.93/246,909.30
  6. Step 6: Final answer
    x = 193,223.29

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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.