Home / 319,336.30-479,042.64-129,756.16

Finding the Fourth Proportional to 319,336.30, 479,042.64 and 129,756.16

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Solution

The fourth proportional to 319,336.30, 479,042.64 and 129,756.16 is: 194,649.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,336.30 : 479,042.64 = 129,756.16 : x
  2. Step 2: Convert to fraction form
    319,336.30/479,042.64 = 129,756.16/x
  3. Step 3: Cross multiply
    319,336.30x = 479,042.64 × 129,756.16
  4. Step 4: Simplify right side
    319,336.30x = 62,158,733,442.66
  5. Step 5: Solve for x
    x = 62,158,733,442.66/319,336.30
  6. Step 6: Final answer
    x = 194,649.76

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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.