Home / 330,375.51-455,519.30-279,298.13

Finding the Fourth Proportional to 330,375.51, 455,519.30 and 279,298.13

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Solution

The fourth proportional to 330,375.51, 455,519.30 and 279,298.13 is: 385,094.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,375.51 : 455,519.30 = 279,298.13 : x
  2. Step 2: Convert to fraction form
    330,375.51/455,519.30 = 279,298.13/x
  3. Step 3: Cross multiply
    330,375.51x = 455,519.30 × 279,298.13
  4. Step 4: Simplify right side
    330,375.51x = 127,225,684,994.82
  5. Step 5: Solve for x
    x = 127,225,684,994.82/330,375.51
  6. Step 6: Final answer
    x = 385,094.18

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1.5x scale

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.