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Finding the Fourth Proportional to 319,397.99, 479,096.98 and 82,740.66

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Solution

The fourth proportional to 319,397.99, 479,096.98 and 82,740.66 is: 124,110.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,397.99 : 479,096.98 = 82,740.66 : x
  2. Step 2: Convert to fraction form
    319,397.99/479,096.98 = 82,740.66/x
  3. Step 3: Cross multiply
    319,397.99x = 479,096.98 × 82,740.66
  4. Step 4: Simplify right side
    319,397.99x = 39,640,798,325.74
  5. Step 5: Solve for x
    x = 39,640,798,325.74/319,397.99
  6. Step 6: Final answer
    x = 124,110.98

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1.5x scale

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.