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Finding the Fourth Proportional to 628,001.40, 942,059.70 and 207,278.20

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Solution

The fourth proportional to 628,001.40, 942,059.70 and 207,278.20 is: 310,936.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,001.40 : 942,059.70 = 207,278.20 : x
  2. Step 2: Convert to fraction form
    628,001.40/942,059.70 = 207,278.20/x
  3. Step 3: Cross multiply
    628,001.40x = 942,059.70 × 207,278.20
  4. Step 4: Simplify right side
    628,001.40x = 195,268,438,908.54
  5. Step 5: Solve for x
    x = 195,268,438,908.54/628,001.40
  6. Step 6: Final answer
    x = 310,936.31

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Similar ratio
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1.5x scale

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.