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Finding the Fourth Proportional to 217,298.14, 299,870.50 and 121,804.84

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Solution

The fourth proportional to 217,298.14, 299,870.50 and 121,804.84 is: 168,090.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,298.14 : 299,870.50 = 121,804.84 : x
  2. Step 2: Convert to fraction form
    217,298.14/299,870.50 = 121,804.84/x
  3. Step 3: Cross multiply
    217,298.14x = 299,870.50 × 121,804.84
  4. Step 4: Simplify right side
    217,298.14x = 36,525,677,664.20
  5. Step 5: Solve for x
    x = 36,525,677,664.20/217,298.14
  6. Step 6: Final answer
    x = 168,090.15

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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.