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Finding the Fourth Proportional to 208,051.70, 312,077.55 and 173,030.90

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Solution

The fourth proportional to 208,051.70, 312,077.55 and 173,030.90 is: 259,546.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,051.70 : 312,077.55 = 173,030.90 : x
  2. Step 2: Convert to fraction form
    208,051.70/312,077.55 = 173,030.90/x
  3. Step 3: Cross multiply
    208,051.70x = 312,077.55 × 173,030.90
  4. Step 4: Simplify right side
    208,051.70x = 53,999,059,346.30
  5. Step 5: Solve for x
    x = 53,999,059,346.30/208,051.70
  6. Step 6: Final answer
    x = 259,546.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.