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Finding the Fourth Proportional to 208,548.40, 312,822.60 and 103,572.40

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Solution

The fourth proportional to 208,548.40, 312,822.60 and 103,572.40 is: 155,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,548.40 : 312,822.60 = 103,572.40 : x
  2. Step 2: Convert to fraction form
    208,548.40/312,822.60 = 103,572.40/x
  3. Step 3: Cross multiply
    208,548.40x = 312,822.60 × 103,572.40
  4. Step 4: Simplify right side
    208,548.40x = 32,399,787,456.24
  5. Step 5: Solve for x
    x = 32,399,787,456.24/208,548.40
  6. Step 6: Final answer
    x = 155,358.60

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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.