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Finding the Fourth Proportional to 380,588.24, 525,210.62 and 219,441.90

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Solution

The fourth proportional to 380,588.24, 525,210.62 and 219,441.90 is: 302,829.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,588.24 : 525,210.62 = 219,441.90 : x
  2. Step 2: Convert to fraction form
    380,588.24/525,210.62 = 219,441.90/x
  3. Step 3: Cross multiply
    380,588.24x = 525,210.62 × 219,441.90
  4. Step 4: Simplify right side
    380,588.24x = 115,253,216,352.98
  5. Step 5: Solve for x
    x = 115,253,216,352.98/380,588.24
  6. Step 6: Final answer
    x = 302,829.16

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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.