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Finding the Fourth Proportional to 291,346.51, 402,069.40 and 168,843.09

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Solution

The fourth proportional to 291,346.51, 402,069.40 and 168,843.09 is: 233,009.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,346.51 : 402,069.40 = 168,843.09 : x
  2. Step 2: Convert to fraction form
    291,346.51/402,069.40 = 168,843.09/x
  3. Step 3: Cross multiply
    291,346.51x = 402,069.40 × 168,843.09
  4. Step 4: Simplify right side
    291,346.51x = 67,886,639,890.45
  5. Step 5: Solve for x
    x = 67,886,639,890.45/291,346.51
  6. Step 6: Final answer
    x = 233,009.96

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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.