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Finding the Fourth Proportional to 380,622.48, 525,314.96 and 219,445.98

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Solution

The fourth proportional to 380,622.48, 525,314.96 and 219,445.98 is: 302,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,622.48 : 525,314.96 = 219,445.98 : x
  2. Step 2: Convert to fraction form
    380,622.48/525,314.96 = 219,445.98/x
  3. Step 3: Cross multiply
    380,622.48x = 525,314.96 × 219,445.98
  4. Step 4: Simplify right side
    380,622.48x = 115,278,255,108.63
  5. Step 5: Solve for x
    x = 115,278,255,108.63/380,622.48
  6. Step 6: Final answer
    x = 302,867.70

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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.