Home / 209,555,208.89-289,173,158.28-115,464,090.39

Finding the Fourth Proportional to 209,555,208.89, 289,173,158.28 and 115,464,090.39

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Solution

The fourth proportional to 209,555,208.89, 289,173,158.28 and 115,464,090.39 is: 159,333,265.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,555,208.89 : 289,173,158.28 = 115,464,090.39 : x
  2. Step 2: Convert to fraction form
    209,555,208.89/289,173,158.28 = 115,464,090.39/x
  3. Step 3: Cross multiply
    209,555,208.89x = 289,173,158.28 × 115,464,090.39
  4. Step 4: Simplify right side
    209,555,208.89x = 33,389,115,685,387,824
  5. Step 5: Solve for x
    x = 33,389,115,685,387,824/209,555,208.89
  6. Step 6: Final answer
    x = 159,333,265.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.