Home / 208,521.20-312,749.40-58,746.80

Finding the Fourth Proportional to 208,521.20, 312,749.40 and 58,746.80

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Solution

The fourth proportional to 208,521.20, 312,749.40 and 58,746.80 is: 88,111.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,521.20 : 312,749.40 = 58,746.80 : x
  2. Step 2: Convert to fraction form
    208,521.20/312,749.40 = 58,746.80/x
  3. Step 3: Cross multiply
    208,521.20x = 312,749.40 × 58,746.80
  4. Step 4: Simplify right side
    208,521.20x = 18,373,026,451.92
  5. Step 5: Solve for x
    x = 18,373,026,451.92/208,521.20
  6. Step 6: Final answer
    x = 88,111.07

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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.