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Finding the Fourth Proportional to 208,508.40, 312,762.60 and 103,532.40

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Solution

The fourth proportional to 208,508.40, 312,762.60 and 103,532.40 is: 155,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,508.40 : 312,762.60 = 103,532.40 : x
  2. Step 2: Convert to fraction form
    208,508.40/312,762.60 = 103,532.40/x
  3. Step 3: Cross multiply
    208,508.40x = 312,762.60 × 103,532.40
  4. Step 4: Simplify right side
    208,508.40x = 32,381,062,608.24
  5. Step 5: Solve for x
    x = 32,381,062,608.24/208,508.40
  6. Step 6: Final answer
    x = 155,298.60

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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.