Home / 278,884,479.36-418,377,794.52-115,032,852.72

Finding the Fourth Proportional to 278,884,479.36, 418,377,794.52 and 115,032,852.72

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Solution

The fourth proportional to 278,884,479.36, 418,377,794.52 and 115,032,852.72 is: 172,570,346.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,884,479.36 : 418,377,794.52 = 115,032,852.72 : x
  2. Step 2: Convert to fraction form
    278,884,479.36/418,377,794.52 = 115,032,852.72/x
  3. Step 3: Cross multiply
    278,884,479.36x = 418,377,794.52 × 115,032,852.72
  4. Step 4: Simplify right side
    278,884,479.36x = 48,127,191,218,337,584
  5. Step 5: Solve for x
    x = 48,127,191,218,337,584/278,884,479.36
  6. Step 6: Final answer
    x = 172,570,346.43

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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.