Home / 808,531.80-1,212,801.30-209,450.40

Finding the Fourth Proportional to 808,531.80, 1,212,801.30 and 209,450.40

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Solution

The fourth proportional to 808,531.80, 1,212,801.30 and 209,450.40 is: 314,176.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,531.80 : 1,212,801.30 = 209,450.40 : x
  2. Step 2: Convert to fraction form
    808,531.80/1,212,801.30 = 209,450.40/x
  3. Step 3: Cross multiply
    808,531.80x = 1,212,801.30 × 209,450.40
  4. Step 4: Simplify right side
    808,531.80x = 254,021,717,405.52
  5. Step 5: Solve for x
    x = 254,021,717,405.52/808,531.80
  6. Step 6: Final answer
    x = 314,176.53

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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.