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Finding the Fourth Proportional to 380,662.72, 525,307.68 and 210,896.32

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Solution

The fourth proportional to 380,662.72, 525,307.68 and 210,896.32 is: 291,033.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,662.72 : 525,307.68 = 210,896.32 : x
  2. Step 2: Convert to fraction form
    380,662.72/525,307.68 = 210,896.32/x
  3. Step 3: Cross multiply
    380,662.72x = 525,307.68 × 210,896.32
  4. Step 4: Simplify right side
    380,662.72x = 110,785,456,579.74
  5. Step 5: Solve for x
    x = 110,785,456,579.74/380,662.72
  6. Step 6: Final answer
    x = 291,033.11

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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.