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Finding the Fourth Proportional to 519,911.70, 717,443.88 and 302,101.08

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Solution

The fourth proportional to 519,911.70, 717,443.88 and 302,101.08 is: 416,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,911.70 : 717,443.88 = 302,101.08 : x
  2. Step 2: Convert to fraction form
    519,911.70/717,443.88 = 302,101.08/x
  3. Step 3: Cross multiply
    519,911.70x = 717,443.88 × 302,101.08
  4. Step 4: Simplify right side
    519,911.70x = 216,740,570,987.39
  5. Step 5: Solve for x
    x = 216,740,570,987.39/519,911.70
  6. Step 6: Final answer
    x = 416,879.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.