Home / 371,486,689.05-512,621,158.77-218,698,954.32

Finding the Fourth Proportional to 371,486,689.05, 512,621,158.77 and 218,698,954.32

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Solution

The fourth proportional to 371,486,689.05, 512,621,158.77 and 218,698,954.32 is: 301,786,617.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,486,689.05 : 512,621,158.77 = 218,698,954.32 : x
  2. Step 2: Convert to fraction form
    371,486,689.05/512,621,158.77 = 218,698,954.32/x
  3. Step 3: Cross multiply
    371,486,689.05x = 512,621,158.77 × 218,698,954.32
  4. Step 4: Simplify right side
    371,486,689.05x = 112,109,711,385,305,696
  5. Step 5: Solve for x
    x = 112,109,711,385,305,696/371,486,689.05
  6. Step 6: Final answer
    x = 301,786,617.64

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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.