Home / 319,869,045.40-479,803,568.10-268,212,980.20

Finding the Fourth Proportional to 319,869,045.40, 479,803,568.10 and 268,212,980.20

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Solution

The fourth proportional to 319,869,045.40, 479,803,568.10 and 268,212,980.20 is: 402,319,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,869,045.40 : 479,803,568.10 = 268,212,980.20 : x
  2. Step 2: Convert to fraction form
    319,869,045.40/479,803,568.10 = 268,212,980.20/x
  3. Step 3: Cross multiply
    319,869,045.40x = 479,803,568.10 × 268,212,980.20
  4. Step 4: Simplify right side
    319,869,045.40x = 128,689,544,910,694,656
  5. Step 5: Solve for x
    x = 128,689,544,910,694,656/319,869,045.40
  6. Step 6: Final answer
    x = 402,319,470.30

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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.