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Finding the Fourth Proportional to 278,693,870.82, 417,879,405.81 and 94,399,579.86

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Solution

The fourth proportional to 278,693,870.82, 417,879,405.81 and 94,399,579.86 is: 141,544,700.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,693,870.82 : 417,879,405.81 = 94,399,579.86 : x
  2. Step 2: Convert to fraction form
    278,693,870.82/417,879,405.81 = 94,399,579.86/x
  3. Step 3: Cross multiply
    278,693,870.82x = 417,879,405.81 × 94,399,579.86
  4. Step 4: Simplify right side
    278,693,870.82x = 39,447,640,340,610,440
  5. Step 5: Solve for x
    x = 39,447,640,340,610,440/278,693,870.82
  6. Step 6: Final answer
    x = 141,544,700.01

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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.