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Finding the Fourth Proportional to 405,700.38, 559,677.96 and 262,506.60

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Solution

The fourth proportional to 405,700.38, 559,677.96 and 262,506.60 is: 362,137.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,700.38 : 559,677.96 = 262,506.60 : x
  2. Step 2: Convert to fraction form
    405,700.38/559,677.96 = 262,506.60/x
  3. Step 3: Cross multiply
    405,700.38x = 559,677.96 × 262,506.60
  4. Step 4: Simplify right side
    405,700.38x = 146,919,158,374.54
  5. Step 5: Solve for x
    x = 146,919,158,374.54/405,700.38
  6. Step 6: Final answer
    x = 362,137.10

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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.