Home / 210,009,619.70-315,014,429.55-190,861,997.30

Finding the Fourth Proportional to 210,009,619.70, 315,014,429.55 and 190,861,997.30

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Solution

The fourth proportional to 210,009,619.70, 315,014,429.55 and 190,861,997.30 is: 286,292,995.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,009,619.70 : 315,014,429.55 = 190,861,997.30 : x
  2. Step 2: Convert to fraction form
    210,009,619.70/315,014,429.55 = 190,861,997.30/x
  3. Step 3: Cross multiply
    210,009,619.70x = 315,014,429.55 × 190,861,997.30
  4. Step 4: Simplify right side
    210,009,619.70x = 60,124,283,202,233,144
  5. Step 5: Solve for x
    x = 60,124,283,202,233,144/210,009,619.70
  6. Step 6: Final answer
    x = 286,292,995.95

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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.