Home / 291,187,800.48-401,849,081.28-172,212,380.40

Finding the Fourth Proportional to 291,187,800.48, 401,849,081.28 and 172,212,380.40

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Solution

The fourth proportional to 291,187,800.48, 401,849,081.28 and 172,212,380.40 is: 237,658,949.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,187,800.48 : 401,849,081.28 = 172,212,380.40 : x
  2. Step 2: Convert to fraction form
    291,187,800.48/401,849,081.28 = 172,212,380.40/x
  3. Step 3: Cross multiply
    291,187,800.48x = 401,849,081.28 × 172,212,380.40
  4. Step 4: Simplify right side
    291,187,800.48x = 69,203,386,848,781,880
  5. Step 5: Solve for x
    x = 69,203,386,848,781,880/291,187,800.48
  6. Step 6: Final answer
    x = 237,658,949.77

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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.