Home / 480,853.20-721,279.80-148,429.20

Finding the Fourth Proportional to 480,853.20, 721,279.80 and 148,429.20

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Solution

The fourth proportional to 480,853.20, 721,279.80 and 148,429.20 is: 222,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,853.20 : 721,279.80 = 148,429.20 : x
  2. Step 2: Convert to fraction form
    480,853.20/721,279.80 = 148,429.20/x
  3. Step 3: Cross multiply
    480,853.20x = 721,279.80 × 148,429.20
  4. Step 4: Simplify right side
    480,853.20x = 107,058,983,690.16
  5. Step 5: Solve for x
    x = 107,058,983,690.16/480,853.20
  6. Step 6: Final answer
    x = 222,643.80

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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.