Home / 278,886,762.05-418,381,209.52-115,035,132.83

Finding the Fourth Proportional to 278,886,762.05, 418,381,209.52 and 115,035,132.83

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Solution

The fourth proportional to 278,886,762.05, 418,381,209.52 and 115,035,132.83 is: 172,573,763.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,886,762.05 : 418,381,209.52 = 115,035,132.83 : x
  2. Step 2: Convert to fraction form
    278,886,762.05/418,381,209.52 = 115,035,132.83/x
  3. Step 3: Cross multiply
    278,886,762.05x = 418,381,209.52 × 115,035,132.83
  4. Step 4: Simplify right side
    278,886,762.05x = 48,128,538,008,329,768
  5. Step 5: Solve for x
    x = 48,128,538,008,329,768/278,886,762.05
  6. Step 6: Final answer
    x = 172,573,763.11

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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.