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Finding the Fourth Proportional to 919,322.07, 1,378,978.51 and 236,208.30

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Solution

The fourth proportional to 919,322.07, 1,378,978.51 and 236,208.30 is: 354,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,322.07 : 1,378,978.51 = 236,208.30 : x
  2. Step 2: Convert to fraction form
    919,322.07/1,378,978.51 = 236,208.30/x
  3. Step 3: Cross multiply
    919,322.07x = 1,378,978.51 × 236,208.30
  4. Step 4: Simplify right side
    919,322.07x = 325,726,169,583.63
  5. Step 5: Solve for x
    x = 325,726,169,583.63/919,322.07
  6. Step 6: Final answer
    x = 354,311.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.