Home / 398,580,866.89-550,041,941.18-222,368,898.69

Finding the Fourth Proportional to 398,580,866.89, 550,041,941.18 and 222,368,898.69

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Solution

The fourth proportional to 398,580,866.89, 550,041,941.18 and 222,368,898.69 is: 306,869,272.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,580,866.89 : 550,041,941.18 = 222,368,898.69 : x
  2. Step 2: Convert to fraction form
    398,580,866.89/550,041,941.18 = 222,368,898.69/x
  3. Step 3: Cross multiply
    398,580,866.89x = 550,041,941.18 × 222,368,898.69
  4. Step 4: Simplify right side
    398,580,866.89x = 122,312,220,694,062,288
  5. Step 5: Solve for x
    x = 122,312,220,694,062,288/398,580,866.89
  6. Step 6: Final answer
    x = 306,869,272.60

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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.