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Finding the Fourth Proportional to 217,873.51, 300,618.80 and 127,188.32

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Solution

The fourth proportional to 217,873.51, 300,618.80 and 127,188.32 is: 175,492.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,873.51 : 300,618.80 = 127,188.32 : x
  2. Step 2: Convert to fraction form
    217,873.51/300,618.80 = 127,188.32/x
  3. Step 3: Cross multiply
    217,873.51x = 300,618.80 × 127,188.32
  4. Step 4: Simplify right side
    217,873.51x = 38,235,199,792.45
  5. Step 5: Solve for x
    x = 38,235,199,792.45/217,873.51
  6. Step 6: Final answer
    x = 175,492.65

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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.