Home / 278,019,265.21-417,015,420.32-103,176,384.86

Finding the Fourth Proportional to 278,019,265.21, 417,015,420.32 and 103,176,384.86

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Solution

The fourth proportional to 278,019,265.21, 417,015,420.32 and 103,176,384.86 is: 154,759,575.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,019,265.21 : 417,015,420.32 = 103,176,384.86 : x
  2. Step 2: Convert to fraction form
    278,019,265.21/417,015,420.32 = 103,176,384.86/x
  3. Step 3: Cross multiply
    278,019,265.21x = 417,015,420.32 × 103,176,384.86
  4. Step 4: Simplify right side
    278,019,265.21x = 43,026,143,500,791,464
  5. Step 5: Solve for x
    x = 43,026,143,500,791,464/278,019,265.21
  6. Step 6: Final answer
    x = 154,759,575.63

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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.