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Finding the Fourth Proportional to 319,762.12, 479,644.62 and 83,088.04

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Solution

The fourth proportional to 319,762.12, 479,644.62 and 83,088.04 is: 124,632.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,762.12 : 479,644.62 = 83,088.04 : x
  2. Step 2: Convert to fraction form
    319,762.12/479,644.62 = 83,088.04/x
  3. Step 3: Cross multiply
    319,762.12x = 479,644.62 × 83,088.04
  4. Step 4: Simplify right side
    319,762.12x = 39,852,731,372.34
  5. Step 5: Solve for x
    x = 39,852,731,372.34/319,762.12
  6. Step 6: Final answer
    x = 124,632.43

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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.