Home / 315,023,121.45-472,392,964.58-120,870,009.45

Finding the Fourth Proportional to 315,023,121.45, 472,392,964.58 and 120,870,009.45

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Solution

The fourth proportional to 315,023,121.45, 472,392,964.58 and 120,870,009.45 is: 181,250,639.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,023,121.45 : 472,392,964.58 = 120,870,009.45 : x
  2. Step 2: Convert to fraction form
    315,023,121.45/472,392,964.58 = 120,870,009.45/x
  3. Step 3: Cross multiply
    315,023,121.45x = 472,392,964.58 × 120,870,009.45
  4. Step 4: Simplify right side
    315,023,121.45x = 57,098,142,092,293,768
  5. Step 5: Solve for x
    x = 57,098,142,092,293,768/315,023,121.45
  6. Step 6: Final answer
    x = 181,250,639.09

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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.