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Finding the Fourth Proportional to 378,209.70, 567,314.55 and 336,875.40

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Solution

The fourth proportional to 378,209.70, 567,314.55 and 336,875.40 is: 505,313.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,209.70 : 567,314.55 = 336,875.40 : x
  2. Step 2: Convert to fraction form
    378,209.70/567,314.55 = 336,875.40/x
  3. Step 3: Cross multiply
    378,209.70x = 567,314.55 × 336,875.40
  4. Step 4: Simplify right side
    378,209.70x = 191,114,315,957.07
  5. Step 5: Solve for x
    x = 191,114,315,957.07/378,209.70
  6. Step 6: Final answer
    x = 505,313.10

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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.