Home / 216,709,359.50-299,058,016.20-128,675,824.94

Finding the Fourth Proportional to 216,709,359.50, 299,058,016.20 and 128,675,824.94

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Solution

The fourth proportional to 216,709,359.50, 299,058,016.20 and 128,675,824.94 is: 177,572,104.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,709,359.50 : 299,058,016.20 = 128,675,824.94 : x
  2. Step 2: Convert to fraction form
    216,709,359.50/299,058,016.20 = 128,675,824.94/x
  3. Step 3: Cross multiply
    216,709,359.50x = 299,058,016.20 × 128,675,824.94
  4. Step 4: Simplify right side
    216,709,359.50x = 38,481,536,939,454,880
  5. Step 5: Solve for x
    x = 38,481,536,939,454,880/216,709,359.50
  6. Step 6: Final answer
    x = 177,572,104.08

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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.