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Finding the Fourth Proportional to 380,544.63, 525,151.58 and 210,789.69

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Solution

The fourth proportional to 380,544.63, 525,151.58 and 210,789.69 is: 290,889.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,544.63 : 525,151.58 = 210,789.69 : x
  2. Step 2: Convert to fraction form
    380,544.63/525,151.58 = 210,789.69/x
  3. Step 3: Cross multiply
    380,544.63x = 525,151.58 × 210,789.69
  4. Step 4: Simplify right side
    380,544.63x = 110,696,538,751.21
  5. Step 5: Solve for x
    x = 110,696,538,751.21/380,544.63
  6. Step 6: Final answer
    x = 290,889.77

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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.