Home / 990,185.40-1,485,278.10-242,231.40

Finding the Fourth Proportional to 990,185.40, 1,485,278.10 and 242,231.40

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Solution

The fourth proportional to 990,185.40, 1,485,278.10 and 242,231.40 is: 363,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,185.40 : 1,485,278.10 = 242,231.40 : x
  2. Step 2: Convert to fraction form
    990,185.40/1,485,278.10 = 242,231.40/x
  3. Step 3: Cross multiply
    990,185.40x = 1,485,278.10 × 242,231.40
  4. Step 4: Simplify right side
    990,185.40x = 359,780,993,552.34
  5. Step 5: Solve for x
    x = 359,780,993,552.34/990,185.40
  6. Step 6: Final answer
    x = 363,347.10

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Double scale
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Similar ratio
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1.5x scale

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.