Home / 810,097.20-1,215,145.80-249,131.70

Finding the Fourth Proportional to 810,097.20, 1,215,145.80 and 249,131.70

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Solution

The fourth proportional to 810,097.20, 1,215,145.80 and 249,131.70 is: 373,697.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,097.20 : 1,215,145.80 = 249,131.70 : x
  2. Step 2: Convert to fraction form
    810,097.20/1,215,145.80 = 249,131.70/x
  3. Step 3: Cross multiply
    810,097.20x = 1,215,145.80 × 249,131.70
  4. Step 4: Simplify right side
    810,097.20x = 302,731,338,901.86
  5. Step 5: Solve for x
    x = 302,731,338,901.86/810,097.20
  6. Step 6: Final answer
    x = 373,697.55

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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.