Home / 279,286,510.26-385,401,139.36-153,836,005.57

Finding the Fourth Proportional to 279,286,510.26, 385,401,139.36 and 153,836,005.57

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Solution

The fourth proportional to 279,286,510.26, 385,401,139.36 and 153,836,005.57 is: 212,285,841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,286,510.26 : 385,401,139.36 = 153,836,005.57 : x
  2. Step 2: Convert to fraction form
    279,286,510.26/385,401,139.36 = 153,836,005.57/x
  3. Step 3: Cross multiply
    279,286,510.26x = 385,401,139.36 × 153,836,005.57
  4. Step 4: Simplify right side
    279,286,510.26x = 59,288,571,821,269,304
  5. Step 5: Solve for x
    x = 59,288,571,821,269,304/279,286,510.26
  6. Step 6: Final answer
    x = 212,285,841.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.