Home / 346,900.20-478,802.25-225,830.61

Finding the Fourth Proportional to 346,900.20, 478,802.25 and 225,830.61

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Solution

The fourth proportional to 346,900.20, 478,802.25 and 225,830.61 is: 311,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,900.20 : 478,802.25 = 225,830.61 : x
  2. Step 2: Convert to fraction form
    346,900.20/478,802.25 = 225,830.61/x
  3. Step 3: Cross multiply
    346,900.20x = 478,802.25 × 225,830.61
  4. Step 4: Simplify right side
    346,900.20x = 108,128,204,186.87
  5. Step 5: Solve for x
    x = 108,128,204,186.87/346,900.20
  6. Step 6: Final answer
    x = 311,698.30

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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.