Home / 353,193,804.32-487,402,689.12-196,560,869.78

Finding the Fourth Proportional to 353,193,804.32, 487,402,689.12 and 196,560,869.78

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Solution

The fourth proportional to 353,193,804.32, 487,402,689.12 and 196,560,869.78 is: 271,251,350.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,193,804.32 : 487,402,689.12 = 196,560,869.78 : x
  2. Step 2: Convert to fraction form
    353,193,804.32/487,402,689.12 = 196,560,869.78/x
  3. Step 3: Cross multiply
    353,193,804.32x = 487,402,689.12 × 196,560,869.78
  4. Step 4: Simplify right side
    353,193,804.32x = 95,804,296,506,538,144
  5. Step 5: Solve for x
    x = 95,804,296,506,538,144/353,193,804.32
  6. Step 6: Final answer
    x = 271,251,350.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.