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Finding the Fourth Proportional to 405,336.42, 608,035.68 and 139,094.82

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Solution

The fourth proportional to 405,336.42, 608,035.68 and 139,094.82 is: 208,652.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,336.42 : 608,035.68 = 139,094.82 : x
  2. Step 2: Convert to fraction form
    405,336.42/608,035.68 = 139,094.82/x
  3. Step 3: Cross multiply
    405,336.42x = 608,035.68 × 139,094.82
  4. Step 4: Simplify right side
    405,336.42x = 84,574,613,463.18
  5. Step 5: Solve for x
    x = 84,574,613,463.18/405,336.42
  6. Step 6: Final answer
    x = 208,652.89

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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.