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Finding the Fourth Proportional to 211,366.94, 291,716.40 and 130,820.42

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Solution

The fourth proportional to 211,366.94, 291,716.40 and 130,820.42 is: 180,550.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,366.94 : 291,716.40 = 130,820.42 : x
  2. Step 2: Convert to fraction form
    211,366.94/291,716.40 = 130,820.42/x
  3. Step 3: Cross multiply
    211,366.94x = 291,716.40 × 130,820.42
  4. Step 4: Simplify right side
    211,366.94x = 38,162,461,968.89
  5. Step 5: Solve for x
    x = 38,162,461,968.89/211,366.94
  6. Step 6: Final answer
    x = 180,550.76

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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.