Home / 313,518,715.56-470,015,009.82-138,613,510.80

Finding the Fourth Proportional to 313,518,715.56, 470,015,009.82 and 138,613,510.80

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Solution

The fourth proportional to 313,518,715.56, 470,015,009.82 and 138,613,510.80 is: 207,803,960.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,518,715.56 : 470,015,009.82 = 138,613,510.80 : x
  2. Step 2: Convert to fraction form
    313,518,715.56/470,015,009.82 = 138,613,510.80/x
  3. Step 3: Cross multiply
    313,518,715.56x = 470,015,009.82 × 138,613,510.80
  4. Step 4: Simplify right side
    313,518,715.56x = 65,150,430,639,846,680
  5. Step 5: Solve for x
    x = 65,150,430,639,846,680/313,518,715.56
  6. Step 6: Final answer
    x = 207,803,960.04

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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.