Home / 221,430,806.40-332,146,209.60-85,120,636.80

Finding the Fourth Proportional to 221,430,806.40, 332,146,209.60 and 85,120,636.80

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Solution

The fourth proportional to 221,430,806.40, 332,146,209.60 and 85,120,636.80 is: 127,680,955.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,430,806.40 : 332,146,209.60 = 85,120,636.80 : x
  2. Step 2: Convert to fraction form
    221,430,806.40/332,146,209.60 = 85,120,636.80/x
  3. Step 3: Cross multiply
    221,430,806.40x = 332,146,209.60 × 85,120,636.80
  4. Step 4: Simplify right side
    221,430,806.40x = 28,272,496,871,858,276
  5. Step 5: Solve for x
    x = 28,272,496,871,858,276/221,430,806.40
  6. Step 6: Final answer
    x = 127,680,955.20

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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.