Home / 752,139.17-1,128,211.18-191,173.67

Finding the Fourth Proportional to 752,139.17, 1,128,211.18 and 191,173.67

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Solution

The fourth proportional to 752,139.17, 1,128,211.18 and 191,173.67 is: 286,761.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,139.17 : 1,128,211.18 = 191,173.67 : x
  2. Step 2: Convert to fraction form
    752,139.17/1,128,211.18 = 191,173.67/x
  3. Step 3: Cross multiply
    752,139.17x = 1,128,211.18 × 191,173.67
  4. Step 4: Simplify right side
    752,139.17x = 215,684,271,002.78
  5. Step 5: Solve for x
    x = 215,684,271,002.78/752,139.17
  6. Step 6: Final answer
    x = 286,761.12

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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.