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Finding the Fourth Proportional to 211,017.60, 291,643.20 and 169,027.20

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Solution

The fourth proportional to 211,017.60, 291,643.20 and 169,027.20 is: 233,609.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,017.60 : 291,643.20 = 169,027.20 : x
  2. Step 2: Convert to fraction form
    211,017.60/291,643.20 = 169,027.20/x
  3. Step 3: Cross multiply
    211,017.60x = 291,643.20 × 169,027.20
  4. Step 4: Simplify right side
    211,017.60x = 49,295,633,495.04
  5. Step 5: Solve for x
    x = 49,295,633,495.04/211,017.60
  6. Step 6: Final answer
    x = 233,609.11

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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.