Home / 208,212.36-287,335.35-112,721.10

Finding the Fourth Proportional to 208,212.36, 287,335.35 and 112,721.10

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Solution

The fourth proportional to 208,212.36, 287,335.35 and 112,721.10 is: 155,556.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,212.36 : 287,335.35 = 112,721.10 : x
  2. Step 2: Convert to fraction form
    208,212.36/287,335.35 = 112,721.10/x
  3. Step 3: Cross multiply
    208,212.36x = 287,335.35 × 112,721.10
  4. Step 4: Simplify right side
    208,212.36x = 32,388,756,720.89
  5. Step 5: Solve for x
    x = 32,388,756,720.89/208,212.36
  6. Step 6: Final answer
    x = 155,556.36

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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.