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Finding the Fourth Proportional to 480,118.32, 662,270.48 and 307,978.34

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Solution

The fourth proportional to 480,118.32, 662,270.48 and 307,978.34 is: 424,822.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,118.32 : 662,270.48 = 307,978.34 : x
  2. Step 2: Convert to fraction form
    480,118.32/662,270.48 = 307,978.34/x
  3. Step 3: Cross multiply
    480,118.32x = 662,270.48 × 307,978.34
  4. Step 4: Simplify right side
    480,118.32x = 203,964,959,365.08
  5. Step 5: Solve for x
    x = 203,964,959,365.08/480,118.32
  6. Step 6: Final answer
    x = 424,822.28

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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.