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Finding the Fourth Proportional to 217,855.08, 300,654.72 and 121,070.16

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Solution

The fourth proportional to 217,855.08, 300,654.72 and 121,070.16 is: 167,085.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,855.08 : 300,654.72 = 121,070.16 : x
  2. Step 2: Convert to fraction form
    217,855.08/300,654.72 = 121,070.16/x
  3. Step 3: Cross multiply
    217,855.08x = 300,654.72 × 121,070.16
  4. Step 4: Simplify right side
    217,855.08x = 36,400,315,055.16
  5. Step 5: Solve for x
    x = 36,400,315,055.16/217,855.08
  6. Step 6: Final answer
    x = 167,085.00

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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.