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Finding the Fourth Proportional to 421,691.04, 581,959.44 and 242,900.64

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Solution

The fourth proportional to 421,691.04, 581,959.44 and 242,900.64 is: 335,217.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,691.04 : 581,959.44 = 242,900.64 : x
  2. Step 2: Convert to fraction form
    421,691.04/581,959.44 = 242,900.64/x
  3. Step 3: Cross multiply
    421,691.04x = 581,959.44 × 242,900.64
  4. Step 4: Simplify right side
    421,691.04x = 141,358,320,430.04
  5. Step 5: Solve for x
    x = 141,358,320,430.04/421,691.04
  6. Step 6: Final answer
    x = 335,217.75

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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.