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Finding the Fourth Proportional to 208,014.40, 312,021.60 and 83,444.80

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Solution

The fourth proportional to 208,014.40, 312,021.60 and 83,444.80 is: 125,167.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,014.40 : 312,021.60 = 83,444.80 : x
  2. Step 2: Convert to fraction form
    208,014.40/312,021.60 = 83,444.80/x
  3. Step 3: Cross multiply
    208,014.40x = 312,021.60 × 83,444.80
  4. Step 4: Simplify right side
    208,014.40x = 26,036,580,007.68
  5. Step 5: Solve for x
    x = 26,036,580,007.68/208,014.40
  6. Step 6: Final answer
    x = 125,167.20

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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.