Home / 398,817,891.21-598,167,000.50-126,153,228.81

Finding the Fourth Proportional to 398,817,891.21, 598,167,000.50 and 126,153,228.81

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Solution

The fourth proportional to 398,817,891.21, 598,167,000.50 and 126,153,228.81 is: 189,210,915.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,817,891.21 : 598,167,000.50 = 126,153,228.81 : x
  2. Step 2: Convert to fraction form
    398,817,891.21/598,167,000.50 = 126,153,228.81/x
  3. Step 3: Cross multiply
    398,817,891.21x = 598,167,000.50 × 126,153,228.81
  4. Step 4: Simplify right side
    398,817,891.21x = 75,460,698,480,667,888
  5. Step 5: Solve for x
    x = 75,460,698,480,667,888/398,817,891.21
  6. Step 6: Final answer
    x = 189,210,915.92

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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.