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Finding the Fourth Proportional to 208,014.40, 312,021.60 and 124,033.60

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Solution

The fourth proportional to 208,014.40, 312,021.60 and 124,033.60 is: 186,050.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,014.40 : 312,021.60 = 124,033.60 : x
  2. Step 2: Convert to fraction form
    208,014.40/312,021.60 = 124,033.60/x
  3. Step 3: Cross multiply
    208,014.40x = 312,021.60 × 124,033.60
  4. Step 4: Simplify right side
    208,014.40x = 38,701,162,325.76
  5. Step 5: Solve for x
    x = 38,701,162,325.76/208,014.40
  6. Step 6: Final answer
    x = 186,050.40

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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.