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Finding the Fourth Proportional to 380,612.70, 525,245.51 and 208,537.19

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Solution

The fourth proportional to 380,612.70, 525,245.51 and 208,537.19 is: 287,781.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,612.70 : 525,245.51 = 208,537.19 : x
  2. Step 2: Convert to fraction form
    380,612.70/525,245.51 = 208,537.19/x
  3. Step 3: Cross multiply
    380,612.70x = 525,245.51 × 208,537.19
  4. Step 4: Simplify right side
    380,612.70x = 109,533,223,177.79
  5. Step 5: Solve for x
    x = 109,533,223,177.79/380,612.70
  6. Step 6: Final answer
    x = 287,781.32

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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.