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Finding the Fourth Proportional to 412,355.60, 618,533.40 and 272,272.40

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Solution

The fourth proportional to 412,355.60, 618,533.40 and 272,272.40 is: 408,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,355.60 : 618,533.40 = 272,272.40 : x
  2. Step 2: Convert to fraction form
    412,355.60/618,533.40 = 272,272.40/x
  3. Step 3: Cross multiply
    412,355.60x = 618,533.40 × 272,272.40
  4. Step 4: Simplify right side
    412,355.60x = 168,409,573,298.16
  5. Step 5: Solve for x
    x = 168,409,573,298.16/412,355.60
  6. Step 6: Final answer
    x = 408,408.60

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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.