Home / 208,438.13-312,657.32-146,385.65

Finding the Fourth Proportional to 208,438.13, 312,657.32 and 146,385.65

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Solution

The fourth proportional to 208,438.13, 312,657.32 and 146,385.65 is: 219,578.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,438.13 : 312,657.32 = 146,385.65 : x
  2. Step 2: Convert to fraction form
    208,438.13/312,657.32 = 146,385.65/x
  3. Step 3: Cross multiply
    208,438.13x = 312,657.32 × 146,385.65
  4. Step 4: Simplify right side
    208,438.13x = 45,768,545,015.46
  5. Step 5: Solve for x
    x = 45,768,545,015.46/208,438.13
  6. Step 6: Final answer
    x = 219,578.56

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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.