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Finding the Fourth Proportional to 360,364.60, 540,612.78 and 120,455.80

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Solution

The fourth proportional to 360,364.60, 540,612.78 and 120,455.80 is: 180,705.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,364.60 : 540,612.78 = 120,455.80 : x
  2. Step 2: Convert to fraction form
    360,364.60/540,612.78 = 120,455.80/x
  3. Step 3: Cross multiply
    360,364.60x = 540,612.78 × 120,455.80
  4. Step 4: Simplify right side
    360,364.60x = 65,119,944,905.12
  5. Step 5: Solve for x
    x = 65,119,944,905.12/360,364.60
  6. Step 6: Final answer
    x = 180,705.72

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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.