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Finding the Fourth Proportional to 290,810.70, 401,319.43 and 163,487.34

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Solution

The fourth proportional to 290,810.70, 401,319.43 and 163,487.34 is: 225,612.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,810.70 : 401,319.43 = 163,487.34 : x
  2. Step 2: Convert to fraction form
    290,810.70/401,319.43 = 163,487.34/x
  3. Step 3: Cross multiply
    290,810.70x = 401,319.43 × 163,487.34
  4. Step 4: Simplify right side
    290,810.70x = 65,610,646,101.02
  5. Step 5: Solve for x
    x = 65,610,646,101.02/290,810.70
  6. Step 6: Final answer
    x = 225,612.90

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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.