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Finding the Fourth Proportional to 378,159.10, 529,816.40 and 378,159.10

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Solution

The fourth proportional to 378,159.10, 529,816.40 and 378,159.10 is: 529,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,159.10 : 529,816.40 = 378,159.10 : x
  2. Step 2: Convert to fraction form
    378,159.10/529,816.40 = 378,159.10/x
  3. Step 3: Cross multiply
    378,159.10x = 529,816.40 × 378,159.10
  4. Step 4: Simplify right side
    378,159.10x = 200,354,892,989.24
  5. Step 5: Solve for x
    x = 200,354,892,989.24/378,159.10
  6. Step 6: Final answer
    x = 529,816.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.