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Finding the Fourth Proportional to 298,978.30, 448,467.45 and 156,628.90

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Solution

The fourth proportional to 298,978.30, 448,467.45 and 156,628.90 is: 234,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,978.30 : 448,467.45 = 156,628.90 : x
  2. Step 2: Convert to fraction form
    298,978.30/448,467.45 = 156,628.90/x
  3. Step 3: Cross multiply
    298,978.30x = 448,467.45 × 156,628.90
  4. Step 4: Simplify right side
    298,978.30x = 70,242,963,379.31
  5. Step 5: Solve for x
    x = 70,242,963,379.31/298,978.30
  6. Step 6: Final answer
    x = 234,943.35

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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.