Home / 208,215.03-287,337.40-112,722.11

Finding the Fourth Proportional to 208,215.03, 287,337.40 and 112,722.11

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Solution

The fourth proportional to 208,215.03, 287,337.40 and 112,722.11 is: 155,556.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,215.03 : 287,337.40 = 112,722.11 : x
  2. Step 2: Convert to fraction form
    208,215.03/287,337.40 = 112,722.11/x
  3. Step 3: Cross multiply
    208,215.03x = 287,337.40 × 112,722.11
  4. Step 4: Simplify right side
    208,215.03x = 32,389,276,291.42
  5. Step 5: Solve for x
    x = 32,389,276,291.42/208,215.03
  6. Step 6: Final answer
    x = 155,556.86

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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.