Home / 255,985.55-353,260.21-142,808.30

Finding the Fourth Proportional to 255,985.55, 353,260.21 and 142,808.30

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Solution

The fourth proportional to 255,985.55, 353,260.21 and 142,808.30 is: 197,075.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,985.55 : 353,260.21 = 142,808.30 : x
  2. Step 2: Convert to fraction form
    255,985.55/353,260.21 = 142,808.30/x
  3. Step 3: Cross multiply
    255,985.55x = 353,260.21 × 142,808.30
  4. Step 4: Simplify right side
    255,985.55x = 50,448,489,249.15
  5. Step 5: Solve for x
    x = 50,448,489,249.15/255,985.55
  6. Step 6: Final answer
    x = 197,075.54

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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.