Home / 208,276.12-287,421.78-112,782.52

Finding the Fourth Proportional to 208,276.12, 287,421.78 and 112,782.52

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Solution

The fourth proportional to 208,276.12, 287,421.78 and 112,782.52 is: 155,640.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,276.12 : 287,421.78 = 112,782.52 : x
  2. Step 2: Convert to fraction form
    208,276.12/287,421.78 = 112,782.52/x
  3. Step 3: Cross multiply
    208,276.12x = 287,421.78 × 112,782.52
  4. Step 4: Simplify right side
    208,276.12x = 32,416,152,651.29
  5. Step 5: Solve for x
    x = 32,416,152,651.29/208,276.12
  6. Step 6: Final answer
    x = 155,640.28

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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.