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Finding the Fourth Proportional to 291,090.56, 401,572.22 and 210,390.26

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Solution

The fourth proportional to 291,090.56, 401,572.22 and 210,390.26 is: 290,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,090.56 : 401,572.22 = 210,390.26 : x
  2. Step 2: Convert to fraction form
    291,090.56/401,572.22 = 210,390.26/x
  3. Step 3: Cross multiply
    291,090.56x = 401,572.22 × 210,390.26
  4. Step 4: Simplify right side
    291,090.56x = 84,486,880,714.76
  5. Step 5: Solve for x
    x = 84,486,880,714.76/291,090.56
  6. Step 6: Final answer
    x = 290,242.60

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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.