Home / 355,319.06-490,390.32-226,216.30

Finding the Fourth Proportional to 355,319.06, 490,390.32 and 226,216.30

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Solution

The fourth proportional to 355,319.06, 490,390.32 and 226,216.30 is: 312,210.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,319.06 : 490,390.32 = 226,216.30 : x
  2. Step 2: Convert to fraction form
    355,319.06/490,390.32 = 226,216.30/x
  3. Step 3: Cross multiply
    355,319.06x = 490,390.32 × 226,216.30
  4. Step 4: Simplify right side
    355,319.06x = 110,934,283,746.22
  5. Step 5: Solve for x
    x = 110,934,283,746.22/355,319.06
  6. Step 6: Final answer
    x = 312,210.34

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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.