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Finding the Fourth Proportional to 368,555.50, 508,627.53 and 221,425.36

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Solution

The fourth proportional to 368,555.50, 508,627.53 and 221,425.36 is: 305,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,555.50 : 508,627.53 = 221,425.36 : x
  2. Step 2: Convert to fraction form
    368,555.50/508,627.53 = 221,425.36/x
  3. Step 3: Cross multiply
    368,555.50x = 508,627.53 × 221,425.36
  4. Step 4: Simplify right side
    368,555.50x = 112,623,033,741.60
  5. Step 5: Solve for x
    x = 112,623,033,741.60/368,555.50
  6. Step 6: Final answer
    x = 305,579.58

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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.