Home / 305,185,585.56-421,238,432.50-199,336,756.28

Finding the Fourth Proportional to 305,185,585.56, 421,238,432.50 and 199,336,756.28

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Solution

The fourth proportional to 305,185,585.56, 421,238,432.50 and 199,336,756.28 is: 275,138,495.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,185,585.56 : 421,238,432.50 = 199,336,756.28 : x
  2. Step 2: Convert to fraction form
    305,185,585.56/421,238,432.50 = 199,336,756.28/x
  3. Step 3: Cross multiply
    305,185,585.56x = 421,238,432.50 × 199,336,756.28
  4. Step 4: Simplify right side
    305,185,585.56x = 83,968,302,755,021,728
  5. Step 5: Solve for x
    x = 83,968,302,755,021,728/305,185,585.56
  6. Step 6: Final answer
    x = 275,138,495.16

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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.