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Finding the Fourth Proportional to 395,449.51, 545,730.32 and 242,572.00

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Solution

The fourth proportional to 395,449.51, 545,730.32 and 242,572.00 is: 334,755.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,449.51 : 545,730.32 = 242,572.00 : x
  2. Step 2: Convert to fraction form
    395,449.51/545,730.32 = 242,572.00/x
  3. Step 3: Cross multiply
    395,449.51x = 545,730.32 × 242,572.00
  4. Step 4: Simplify right side
    395,449.51x = 132,378,895,334.51
  5. Step 5: Solve for x
    x = 132,378,895,334.51/395,449.51
  6. Step 6: Final answer
    x = 334,755.49

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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.