Home / 212,958,585.60-319,217,428.80-115,708,819.20

Finding the Fourth Proportional to 212,958,585.60, 319,217,428.80 and 115,708,819.20

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Solution

The fourth proportional to 212,958,585.60, 319,217,428.80 and 115,708,819.20 is: 173,443,449.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,958,585.60 : 319,217,428.80 = 115,708,819.20 : x
  2. Step 2: Convert to fraction form
    212,958,585.60/319,217,428.80 = 115,708,819.20/x
  3. Step 3: Cross multiply
    212,958,585.60x = 319,217,428.80 × 115,708,819.20
  4. Step 4: Simplify right side
    212,958,585.60x = 36,936,271,754,508,072
  5. Step 5: Solve for x
    x = 36,936,271,754,508,072/212,958,585.60
  6. Step 6: Final answer
    x = 173,443,449.82

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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.