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Finding the Fourth Proportional to 355,484.48, 490,574.44 and 212,257.04

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Solution

The fourth proportional to 355,484.48, 490,574.44 and 212,257.04 is: 292,918.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,484.48 : 490,574.44 = 212,257.04 : x
  2. Step 2: Convert to fraction form
    355,484.48/490,574.44 = 212,257.04/x
  3. Step 3: Cross multiply
    355,484.48x = 490,574.44 × 212,257.04
  4. Step 4: Simplify right side
    355,484.48x = 104,127,878,534.06
  5. Step 5: Solve for x
    x = 104,127,878,534.06/355,484.48
  6. Step 6: Final answer
    x = 292,918.21

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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.