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Finding the Fourth Proportional to 403,710.16, 557,093.28 and 242,572

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Solution

The fourth proportional to 403,710.16, 557,093.28 and 242,572 is: 334,733.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,710.16 : 557,093.28 = 242,572 : x
  2. Step 2: Convert to fraction form
    403,710.16/557,093.28 = 242,572/x
  3. Step 3: Cross multiply
    403,710.16x = 557,093.28 × 242,572
  4. Step 4: Simplify right side
    403,710.16x = 135,135,231,116.16
  5. Step 5: Solve for x
    x = 135,135,231,116.16/403,710.16
  6. Step 6: Final answer
    x = 334,733.29

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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.