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Finding the Fourth Proportional to 211,185.95, 291,436.59 and 126,303

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Solution

The fourth proportional to 211,185.95, 291,436.59 and 126,303 is: 174,298.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,185.95 : 291,436.59 = 126,303 : x
  2. Step 2: Convert to fraction form
    211,185.95/291,436.59 = 126,303/x
  3. Step 3: Cross multiply
    211,185.95x = 291,436.59 × 126,303
  4. Step 4: Simplify right side
    211,185.95x = 36,809,315,626.77
  5. Step 5: Solve for x
    x = 36,809,315,626.77/211,185.95
  6. Step 6: Final answer
    x = 174,298.13

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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.