Home / 209,615,279.49-289,270,232.84-121,561,484.13

Finding the Fourth Proportional to 209,615,279.49, 289,270,232.84 and 121,561,484.13

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Solution

The fourth proportional to 209,615,279.49, 289,270,232.84 and 121,561,484.13 is: 167,755,513.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,615,279.49 : 289,270,232.84 = 121,561,484.13 : x
  2. Step 2: Convert to fraction form
    209,615,279.49/289,270,232.84 = 121,561,484.13/x
  3. Step 3: Cross multiply
    209,615,279.49x = 289,270,232.84 × 121,561,484.13
  4. Step 4: Simplify right side
    209,615,279.49x = 35,164,118,818,964,964
  5. Step 5: Solve for x
    x = 35,164,118,818,964,964/209,615,279.49
  6. Step 6: Final answer
    x = 167,755,513.36

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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.