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Finding the Fourth Proportional to 364,624.80, 546,937.20 and 127,991.40

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Solution

The fourth proportional to 364,624.80, 546,937.20 and 127,991.40 is: 191,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,624.80 : 546,937.20 = 127,991.40 : x
  2. Step 2: Convert to fraction form
    364,624.80/546,937.20 = 127,991.40/x
  3. Step 3: Cross multiply
    364,624.80x = 546,937.20 × 127,991.40
  4. Step 4: Simplify right side
    364,624.80x = 70,003,257,940.08
  5. Step 5: Solve for x
    x = 70,003,257,940.08/364,624.80
  6. Step 6: Final answer
    x = 191,987.10

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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.