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Finding the Fourth Proportional to 478,503.48, 717,078.15 and 265,365.15

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Solution

The fourth proportional to 478,503.48, 717,078.15 and 265,365.15 is: 397,672.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,503.48 : 717,078.15 = 265,365.15 : x
  2. Step 2: Convert to fraction form
    478,503.48/717,078.15 = 265,365.15/x
  3. Step 3: Cross multiply
    478,503.48x = 717,078.15 × 265,365.15
  4. Step 4: Simplify right side
    478,503.48x = 190,287,550,836.47
  5. Step 5: Solve for x
    x = 190,287,550,836.47/478,503.48
  6. Step 6: Final answer
    x = 397,672.24

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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.