Home / 211,640,046.40-317,460,069.60-120,772,820.80

Finding the Fourth Proportional to 211,640,046.40, 317,460,069.60 and 120,772,820.80

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Solution

The fourth proportional to 211,640,046.40, 317,460,069.60 and 120,772,820.80 is: 181,159,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,640,046.40 : 317,460,069.60 = 120,772,820.80 : x
  2. Step 2: Convert to fraction form
    211,640,046.40/317,460,069.60 = 120,772,820.80/x
  3. Step 3: Cross multiply
    211,640,046.40x = 317,460,069.60 × 120,772,820.80
  4. Step 4: Simplify right side
    211,640,046.40x = 38,340,548,096,956,328
  5. Step 5: Solve for x
    x = 38,340,548,096,956,328/211,640,046.40
  6. Step 6: Final answer
    x = 181,159,231.20

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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.