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Finding the Fourth Proportional to 403,820.60, 557,273.22 and 242,678.12

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Solution

The fourth proportional to 403,820.60, 557,273.22 and 242,678.12 is: 334,896.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,820.60 : 557,273.22 = 242,678.12 : x
  2. Step 2: Convert to fraction form
    403,820.60/557,273.22 = 242,678.12/x
  3. Step 3: Cross multiply
    403,820.60x = 557,273.22 × 242,678.12
  4. Step 4: Simplify right side
    403,820.60x = 135,238,017,355.95
  5. Step 5: Solve for x
    x = 135,238,017,355.95/403,820.60
  6. Step 6: Final answer
    x = 334,896.28

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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.