Home / 216,709,358.50-299,058,014.82-128,675,823.94

Finding the Fourth Proportional to 216,709,358.50, 299,058,014.82 and 128,675,823.94

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Solution

The fourth proportional to 216,709,358.50, 299,058,014.82 and 128,675,823.94 is: 177,572,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,709,358.50 : 299,058,014.82 = 128,675,823.94 : x
  2. Step 2: Convert to fraction form
    216,709,358.50/299,058,014.82 = 128,675,823.94/x
  3. Step 3: Cross multiply
    216,709,358.50x = 299,058,014.82 × 128,675,823.94
  4. Step 4: Simplify right side
    216,709,358.50x = 38,481,536,462,824,232
  5. Step 5: Solve for x
    x = 38,481,536,462,824,232/216,709,358.50
  6. Step 6: Final answer
    x = 177,572,102.70

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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.