Home / 220,705.24-330,828-102,279.28

Finding the Fourth Proportional to 220,705.24, 330,828 and 102,279.28

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Solution

The fourth proportional to 220,705.24, 330,828 and 102,279.28 is: 153,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,705.24 : 330,828 = 102,279.28 : x
  2. Step 2: Convert to fraction form
    220,705.24/330,828 = 102,279.28/x
  3. Step 3: Cross multiply
    220,705.24x = 330,828 × 102,279.28
  4. Step 4: Simplify right side
    220,705.24x = 33,836,849,643.84
  5. Step 5: Solve for x
    x = 33,836,849,643.84/220,705.24
  6. Step 6: Final answer
    x = 153,312.40

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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.