Home / 219,034,876.80-328,441,600.32-128,185,760.64

Finding the Fourth Proportional to 219,034,876.80, 328,441,600.32 and 128,185,760.64

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Solution

The fourth proportional to 219,034,876.80, 328,441,600.32 and 128,185,760.64 is: 192,213,847.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,034,876.80 : 328,441,600.32 = 128,185,760.64 : x
  2. Step 2: Convert to fraction form
    219,034,876.80/328,441,600.32 = 128,185,760.64/x
  3. Step 3: Cross multiply
    219,034,876.80x = 328,441,600.32 × 128,185,760.64
  4. Step 4: Simplify right side
    219,034,876.80x = 42,101,536,362,838,064
  5. Step 5: Solve for x
    x = 42,101,536,362,838,064/219,034,876.80
  6. Step 6: Final answer
    x = 192,213,847.30

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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.