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Finding the Fourth Proportional to 252,006.40, 378,009.60 and 112,038.40

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Solution

The fourth proportional to 252,006.40, 378,009.60 and 112,038.40 is: 168,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,006.40 : 378,009.60 = 112,038.40 : x
  2. Step 2: Convert to fraction form
    252,006.40/378,009.60 = 112,038.40/x
  3. Step 3: Cross multiply
    252,006.40x = 378,009.60 × 112,038.40
  4. Step 4: Simplify right side
    252,006.40x = 42,351,590,768.64
  5. Step 5: Solve for x
    x = 42,351,590,768.64/252,006.40
  6. Step 6: Final answer
    x = 168,057.60

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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.