Home / 810,163.80-1,215,245.70-249,125.40

Finding the Fourth Proportional to 810,163.80, 1,215,245.70 and 249,125.40

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Solution

The fourth proportional to 810,163.80, 1,215,245.70 and 249,125.40 is: 373,688.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,163.80 : 1,215,245.70 = 249,125.40 : x
  2. Step 2: Convert to fraction form
    810,163.80/1,215,245.70 = 249,125.40/x
  3. Step 3: Cross multiply
    810,163.80x = 1,215,245.70 × 249,125.40
  4. Step 4: Simplify right side
    810,163.80x = 302,748,571,110.78
  5. Step 5: Solve for x
    x = 302,748,571,110.78/810,163.80
  6. Step 6: Final answer
    x = 373,688.10

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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.