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Finding the Fourth Proportional to 291,313.98, 402,020.73 and 163,994.04

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Solution

The fourth proportional to 291,313.98, 402,020.73 and 163,994.04 is: 226,315.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,313.98 : 402,020.73 = 163,994.04 : x
  2. Step 2: Convert to fraction form
    291,313.98/402,020.73 = 163,994.04/x
  3. Step 3: Cross multiply
    291,313.98x = 402,020.73 × 163,994.04
  4. Step 4: Simplify right side
    291,313.98x = 65,929,003,676.45
  5. Step 5: Solve for x
    x = 65,929,003,676.45/291,313.98
  6. Step 6: Final answer
    x = 226,315.96

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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.