Home / 278,019,270.81-417,015,428.76-103,176,390.51

Finding the Fourth Proportional to 278,019,270.81, 417,015,428.76 and 103,176,390.51

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Solution

The fourth proportional to 278,019,270.81, 417,015,428.76 and 103,176,390.51 is: 154,759,584.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,019,270.81 : 417,015,428.76 = 103,176,390.51 : x
  2. Step 2: Convert to fraction form
    278,019,270.81/417,015,428.76 = 103,176,390.51/x
  3. Step 3: Cross multiply
    278,019,270.81x = 417,015,428.76 × 103,176,390.51
  4. Step 4: Simplify right side
    278,019,270.81x = 43,026,146,726,436,848
  5. Step 5: Solve for x
    x = 43,026,146,726,436,848/278,019,270.81
  6. Step 6: Final answer
    x = 154,759,584.11

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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.