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Finding the Fourth Proportional to 405,294.48, 607,954.02 and 139,051.14

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Solution

The fourth proportional to 405,294.48, 607,954.02 and 139,051.14 is: 208,580.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,294.48 : 607,954.02 = 139,051.14 : x
  2. Step 2: Convert to fraction form
    405,294.48/607,954.02 = 139,051.14/x
  3. Step 3: Cross multiply
    405,294.48x = 607,954.02 × 139,051.14
  4. Step 4: Simplify right side
    405,294.48x = 84,536,699,548.58
  5. Step 5: Solve for x
    x = 84,536,699,548.58/405,294.48
  6. Step 6: Final answer
    x = 208,580.93

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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.