Home / 256,070.22-384,603.27-208,720.05

Finding the Fourth Proportional to 256,070.22, 384,603.27 and 208,720.05

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Solution

The fourth proportional to 256,070.22, 384,603.27 and 208,720.05 is: 313,485.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,070.22 : 384,603.27 = 208,720.05 : x
  2. Step 2: Convert to fraction form
    256,070.22/384,603.27 = 208,720.05/x
  3. Step 3: Cross multiply
    256,070.22x = 384,603.27 × 208,720.05
  4. Step 4: Simplify right side
    256,070.22x = 80,274,413,744.56
  5. Step 5: Solve for x
    x = 80,274,413,744.56/256,070.22
  6. Step 6: Final answer
    x = 313,485.94

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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.