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Finding the Fourth Proportional to 606,987.20, 909,751.80 and 251,818.40

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Solution

The fourth proportional to 606,987.20, 909,751.80 and 251,818.40 is: 377,425.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,987.20 : 909,751.80 = 251,818.40 : x
  2. Step 2: Convert to fraction form
    606,987.20/909,751.80 = 251,818.40/x
  3. Step 3: Cross multiply
    606,987.20x = 909,751.80 × 251,818.40
  4. Step 4: Simplify right side
    606,987.20x = 229,092,242,673.12
  5. Step 5: Solve for x
    x = 229,092,242,673.12/606,987.20
  6. Step 6: Final answer
    x = 377,425.16

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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.