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Finding the Fourth Proportional to 319,995, 480,070.26 and 98,379

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Solution

The fourth proportional to 319,995, 480,070.26 and 98,379 is: 147,592.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,995 : 480,070.26 = 98,379 : x
  2. Step 2: Convert to fraction form
    319,995/480,070.26 = 98,379/x
  3. Step 3: Cross multiply
    319,995x = 480,070.26 × 98,379
  4. Step 4: Simplify right side
    319,995x = 47,228,832,108.54
  5. Step 5: Solve for x
    x = 47,228,832,108.54/319,995
  6. Step 6: Final answer
    x = 147,592.41

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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.