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Finding the Fourth Proportional to 320,887.63, 442,808.07 and 175,665.59

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Solution

The fourth proportional to 320,887.63, 442,808.07 and 175,665.59 is: 242,409.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,887.63 : 442,808.07 = 175,665.59 : x
  2. Step 2: Convert to fraction form
    320,887.63/442,808.07 = 175,665.59/x
  3. Step 3: Cross multiply
    320,887.63x = 442,808.07 × 175,665.59
  4. Step 4: Simplify right side
    320,887.63x = 77,786,138,415.66
  5. Step 5: Solve for x
    x = 77,786,138,415.66/320,887.63
  6. Step 6: Final answer
    x = 242,409.28

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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.