Home / 257,106.50-354,902.21-155,136.26

Finding the Fourth Proportional to 257,106.50, 354,902.21 and 155,136.26

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Solution

The fourth proportional to 257,106.50, 354,902.21 and 155,136.26 is: 214,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,106.50 : 354,902.21 = 155,136.26 : x
  2. Step 2: Convert to fraction form
    257,106.50/354,902.21 = 155,136.26/x
  3. Step 3: Cross multiply
    257,106.50x = 354,902.21 × 155,136.26
  4. Step 4: Simplify right side
    257,106.50x = 55,058,202,218.47
  5. Step 5: Solve for x
    x = 55,058,202,218.47/257,106.50
  6. Step 6: Final answer
    x = 214,145.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.