Home / 810,220.80-1,215,331.20-249,254.40

Finding the Fourth Proportional to 810,220.80, 1,215,331.20 and 249,254.40

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Solution

The fourth proportional to 810,220.80, 1,215,331.20 and 249,254.40 is: 373,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,220.80 : 1,215,331.20 = 249,254.40 : x
  2. Step 2: Convert to fraction form
    810,220.80/1,215,331.20 = 249,254.40/x
  3. Step 3: Cross multiply
    810,220.80x = 1,215,331.20 × 249,254.40
  4. Step 4: Simplify right side
    810,220.80x = 302,926,649,057.28
  5. Step 5: Solve for x
    x = 302,926,649,057.28/810,220.80
  6. Step 6: Final answer
    x = 373,881.60

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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.