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Finding the Fourth Proportional to 312,693,790.64, 469,112,744.64 and 108,221,868.32

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Solution

The fourth proportional to 312,693,790.64, 469,112,744.64 and 108,221,868.32 is: 162,357,741.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,693,790.64 : 469,112,744.64 = 108,221,868.32 : x
  2. Step 2: Convert to fraction form
    312,693,790.64/469,112,744.64 = 108,221,868.32/x
  3. Step 3: Cross multiply
    312,693,790.64x = 469,112,744.64 × 108,221,868.32
  4. Step 4: Simplify right side
    312,693,790.64x = 50,768,257,677,663,864
  5. Step 5: Solve for x
    x = 50,768,257,677,663,864/312,693,790.64
  6. Step 6: Final answer
    x = 162,357,741.65

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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.