Home / 208,276.58-287,421.26-112,782.98

Finding the Fourth Proportional to 208,276.58, 287,421.26 and 112,782.98

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Solution

The fourth proportional to 208,276.58, 287,421.26 and 112,782.98 is: 155,640.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,276.58 : 287,421.26 = 112,782.98 : x
  2. Step 2: Convert to fraction form
    208,276.58/287,421.26 = 112,782.98/x
  3. Step 3: Cross multiply
    208,276.58x = 287,421.26 × 112,782.98
  4. Step 4: Simplify right side
    208,276.58x = 32,416,226,218.15
  5. Step 5: Solve for x
    x = 32,416,226,218.15/208,276.58
  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.