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Finding the Fourth Proportional to 403,568.78, 556,909.65 and 242,512.63

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Solution

The fourth proportional to 403,568.78, 556,909.65 and 242,512.63 is: 334,658.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,568.78 : 556,909.65 = 242,512.63 : x
  2. Step 2: Convert to fraction form
    403,568.78/556,909.65 = 242,512.63/x
  3. Step 3: Cross multiply
    403,568.78x = 556,909.65 × 242,512.63
  4. Step 4: Simplify right side
    403,568.78x = 135,057,622,501.61
  5. Step 5: Solve for x
    x = 135,057,622,501.61/403,568.78
  6. Step 6: Final answer
    x = 334,658.26

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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.