Home / 339,742.20-509,613.30-319,006.20

Finding the Fourth Proportional to 339,742.20, 509,613.30 and 319,006.20

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Solution

The fourth proportional to 339,742.20, 509,613.30 and 319,006.20 is: 478,509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,742.20 : 509,613.30 = 319,006.20 : x
  2. Step 2: Convert to fraction form
    339,742.20/509,613.30 = 319,006.20/x
  3. Step 3: Cross multiply
    339,742.20x = 509,613.30 × 319,006.20
  4. Step 4: Simplify right side
    339,742.20x = 162,569,802,302.46
  5. Step 5: Solve for x
    x = 162,569,802,302.46/339,742.20
  6. Step 6: Final answer
    x = 478,509.30

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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.