Home / 398,817,890.21-598,166,999.00-126,153,227.81

Finding the Fourth Proportional to 398,817,890.21, 598,166,999.00 and 126,153,227.81

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Solution

The fourth proportional to 398,817,890.21, 598,166,999.00 and 126,153,227.81 is: 189,210,914.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,817,890.21 : 598,166,999.00 = 126,153,227.81 : x
  2. Step 2: Convert to fraction form
    398,817,890.21/598,166,999.00 = 126,153,227.81/x
  3. Step 3: Cross multiply
    398,817,890.21x = 598,166,999.00 × 126,153,227.81
  4. Step 4: Simplify right side
    398,817,890.21x = 75,460,697,694,608,768
  5. Step 5: Solve for x
    x = 75,460,697,694,608,768/398,817,890.21
  6. Step 6: Final answer
    x = 189,210,914.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.