Home / 211,640,015.40-317,460,023.10-120,772,789.80

Finding the Fourth Proportional to 211,640,015.40, 317,460,023.10 and 120,772,789.80

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Solution

The fourth proportional to 211,640,015.40, 317,460,023.10 and 120,772,789.80 is: 181,159,184.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,640,015.40 : 317,460,023.10 = 120,772,789.80 : x
  2. Step 2: Convert to fraction form
    211,640,015.40/317,460,023.10 = 120,772,789.80/x
  3. Step 3: Cross multiply
    211,640,015.40x = 317,460,023.10 × 120,772,789.80
  4. Step 4: Simplify right side
    211,640,015.40x = 38,340,532,639,759,448
  5. Step 5: Solve for x
    x = 38,340,532,639,759,448/211,640,015.40
  6. Step 6: Final answer
    x = 181,159,184.70

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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.