Home / 305,400.22-457,878.90-205,312.30

Finding the Fourth Proportional to 305,400.22, 457,878.90 and 205,312.30

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Solution

The fourth proportional to 305,400.22, 457,878.90 and 205,312.30 is: 307,819.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,400.22 : 457,878.90 = 205,312.30 : x
  2. Step 2: Convert to fraction form
    305,400.22/457,878.90 = 205,312.30/x
  3. Step 3: Cross multiply
    305,400.22x = 457,878.90 × 205,312.30
  4. Step 4: Simplify right side
    305,400.22x = 94,008,170,080.47
  5. Step 5: Solve for x
    x = 94,008,170,080.47/305,400.22
  6. Step 6: Final answer
    x = 307,819.59

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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.