Home / 286,785,763.05-428,546,050.43-215,334,759.30

Finding the Fourth Proportional to 286,785,763.05, 428,546,050.43 and 215,334,759.30

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Solution

The fourth proportional to 286,785,763.05, 428,546,050.43 and 215,334,759.30 is: 321,776,296.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,785,763.05 : 428,546,050.43 = 215,334,759.30 : x
  2. Step 2: Convert to fraction form
    286,785,763.05/428,546,050.43 = 215,334,759.30/x
  3. Step 3: Cross multiply
    286,785,763.05x = 428,546,050.43 × 215,334,759.30
  4. Step 4: Simplify right side
    286,785,763.05x = 92,280,860,618,309,712
  5. Step 5: Solve for x
    x = 92,280,860,618,309,712/286,785,763.05
  6. Step 6: Final answer
    x = 321,776,296.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.