Home / 232,590,643.30-320,977,240.39-128,172,451.42

Finding the Fourth Proportional to 232,590,643.30, 320,977,240.39 and 128,172,451.42

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Solution

The fourth proportional to 232,590,643.30, 320,977,240.39 and 128,172,451.42 is: 176,879,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    232,590,643.30 : 320,977,240.39 = 128,172,451.42 : x
  2. Step 2: Convert to fraction form
    232,590,643.30/320,977,240.39 = 128,172,451.42/x
  3. Step 3: Cross multiply
    232,590,643.30x = 320,977,240.39 × 128,172,451.42
  4. Step 4: Simplify right side
    232,590,643.30x = 41,140,439,750,172,072
  5. Step 5: Solve for x
    x = 41,140,439,750,172,072/232,590,643.30
  6. Step 6: Final answer
    x = 176,879,169.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.