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Finding the Fourth Proportional to 378,219.60, 567,329.40 and 310,568.40

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Solution

The fourth proportional to 378,219.60, 567,329.40 and 310,568.40 is: 465,852.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,219.60 : 567,329.40 = 310,568.40 : x
  2. Step 2: Convert to fraction form
    378,219.60/567,329.40 = 310,568.40/x
  3. Step 3: Cross multiply
    378,219.60x = 567,329.40 × 310,568.40
  4. Step 4: Simplify right side
    378,219.60x = 176,194,584,030.96
  5. Step 5: Solve for x
    x = 176,194,584,030.96/378,219.60
  6. Step 6: Final answer
    x = 465,852.60

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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.