Home / 215,320.45-322,965.10-102,970.50

Finding the Fourth Proportional to 215,320.45, 322,965.10 and 102,970.50

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Solution

The fourth proportional to 215,320.45, 322,965.10 and 102,970.50 is: 154,448.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,320.45 : 322,965.10 = 102,970.50 : x
  2. Step 2: Convert to fraction form
    215,320.45/322,965.10 = 102,970.50/x
  3. Step 3: Cross multiply
    215,320.45x = 322,965.10 × 102,970.50
  4. Step 4: Simplify right side
    215,320.45x = 33,255,878,032.31
  5. Step 5: Solve for x
    x = 33,255,878,032.31/215,320.45
  6. Step 6: Final answer
    x = 154,448.30

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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.