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Finding the Fourth Proportional to 290,368.37, 400,638.24 and 169,440.63

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Solution

The fourth proportional to 290,368.37, 400,638.24 and 169,440.63 is: 233,787.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,368.37 : 400,638.24 = 169,440.63 : x
  2. Step 2: Convert to fraction form
    290,368.37/400,638.24 = 169,440.63/x
  3. Step 3: Cross multiply
    290,368.37x = 400,638.24 × 169,440.63
  4. Step 4: Simplify right side
    290,368.37x = 67,884,395,787.69
  5. Step 5: Solve for x
    x = 67,884,395,787.69/290,368.37
  6. Step 6: Final answer
    x = 233,787.16

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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.