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Finding the Fourth Proportional to 211,813.64, 292,303.64 and 115,017.65

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Solution

The fourth proportional to 211,813.64, 292,303.64 and 115,017.65 is: 158,724.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,813.64 : 292,303.64 = 115,017.65 : x
  2. Step 2: Convert to fraction form
    211,813.64/292,303.64 = 115,017.65/x
  3. Step 3: Cross multiply
    211,813.64x = 292,303.64 × 115,017.65
  4. Step 4: Simplify right side
    211,813.64x = 33,620,077,759.25
  5. Step 5: Solve for x
    x = 33,620,077,759.25/211,813.64
  6. Step 6: Final answer
    x = 158,724.80

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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.