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Finding the Fourth Proportional to 393,445.98, 589,848.82 and 123,435.32

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Solution

The fourth proportional to 393,445.98, 589,848.82 and 123,435.32 is: 185,052.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,445.98 : 589,848.82 = 123,435.32 : x
  2. Step 2: Convert to fraction form
    393,445.98/589,848.82 = 123,435.32/x
  3. Step 3: Cross multiply
    393,445.98x = 589,848.82 × 123,435.32
  4. Step 4: Simplify right side
    393,445.98x = 72,808,174,590.49
  5. Step 5: Solve for x
    x = 72,808,174,590.49/393,445.98
  6. Step 6: Final answer
    x = 185,052.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.