Home / 808,109.40-1,211,969.70-247,148.76

Finding the Fourth Proportional to 808,109.40, 1,211,969.70 and 247,148.76

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Solution

The fourth proportional to 808,109.40, 1,211,969.70 and 247,148.76 is: 370,663.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,109.40 : 1,211,969.70 = 247,148.76 : x
  2. Step 2: Convert to fraction form
    808,109.40/1,211,969.70 = 247,148.76/x
  3. Step 3: Cross multiply
    808,109.40x = 1,211,969.70 × 247,148.76
  4. Step 4: Simplify right side
    808,109.40x = 299,536,808,512.57
  5. Step 5: Solve for x
    x = 299,536,808,512.57/808,109.40
  6. Step 6: Final answer
    x = 370,663.69

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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.