Home / 208,021.80-312,032.70-172,592.40

Finding the Fourth Proportional to 208,021.80, 312,032.70 and 172,592.40

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Solution

The fourth proportional to 208,021.80, 312,032.70 and 172,592.40 is: 258,888.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,021.80 : 312,032.70 = 172,592.40 : x
  2. Step 2: Convert to fraction form
    208,021.80/312,032.70 = 172,592.40/x
  3. Step 3: Cross multiply
    208,021.80x = 312,032.70 × 172,592.40
  4. Step 4: Simplify right side
    208,021.80x = 53,854,472,571.48
  5. Step 5: Solve for x
    x = 53,854,472,571.48/208,021.80
  6. Step 6: Final answer
    x = 258,888.60

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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.