Home / 208,476,319.28-287,577,791.57-130,023,669.65

Finding the Fourth Proportional to 208,476,319.28, 287,577,791.57 and 130,023,669.65

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Solution

The fourth proportional to 208,476,319.28, 287,577,791.57 and 130,023,669.65 is: 179,358,115.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,476,319.28 : 287,577,791.57 = 130,023,669.65 : x
  2. Step 2: Convert to fraction form
    208,476,319.28/287,577,791.57 = 130,023,669.65/x
  3. Step 3: Cross multiply
    208,476,319.28x = 287,577,791.57 × 130,023,669.65
  4. Step 4: Simplify right side
    208,476,319.28x = 37,391,919,768,661,400
  5. Step 5: Solve for x
    x = 37,391,919,768,661,400/208,476,319.28
  6. Step 6: Final answer
    x = 179,358,115.58

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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.