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Finding the Fourth Proportional to 211,090.76, 291,291.90 and 115,598.60

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Solution

The fourth proportional to 211,090.76, 291,291.90 and 115,598.60 is: 159,518.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,090.76 : 291,291.90 = 115,598.60 : x
  2. Step 2: Convert to fraction form
    211,090.76/291,291.90 = 115,598.60/x
  3. Step 3: Cross multiply
    211,090.76x = 291,291.90 × 115,598.60
  4. Step 4: Simplify right side
    211,090.76x = 33,672,935,831.34
  5. Step 5: Solve for x
    x = 33,672,935,831.34/211,090.76
  6. Step 6: Final answer
    x = 159,518.76

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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.