Home / 431,323,809.60-647,162,661.60-158,825,121.60

Finding the Fourth Proportional to 431,323,809.60, 647,162,661.60 and 158,825,121.60

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Solution

The fourth proportional to 431,323,809.60, 647,162,661.60 and 158,825,121.60 is: 238,302,839.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,323,809.60 : 647,162,661.60 = 158,825,121.60 : x
  2. Step 2: Convert to fraction form
    431,323,809.60/647,162,661.60 = 158,825,121.60/x
  3. Step 3: Cross multiply
    431,323,809.60x = 647,162,661.60 × 158,825,121.60
  4. Step 4: Simplify right side
    431,323,809.60x = 102,785,688,423,599,648
  5. Step 5: Solve for x
    x = 102,785,688,423,599,648/431,323,809.60
  6. Step 6: Final answer
    x = 238,302,839.16

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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.