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Finding the Fourth Proportional to 380,518.10, 525,118.83 and 229,585.94

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Solution

The fourth proportional to 380,518.10, 525,118.83 and 229,585.94 is: 316,830.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,518.10 : 525,118.83 = 229,585.94 : x
  2. Step 2: Convert to fraction form
    380,518.10/525,118.83 = 229,585.94/x
  3. Step 3: Cross multiply
    380,518.10x = 525,118.83 × 229,585.94
  4. Step 4: Simplify right side
    380,518.10x = 120,559,900,197.25
  5. Step 5: Solve for x
    x = 120,559,900,197.25/380,518.10
  6. Step 6: Final answer
    x = 316,830.92

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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.