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Finding the Fourth Proportional to 421,368.99, 581,346.77 and 239,952.27

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Solution

The fourth proportional to 421,368.99, 581,346.77 and 239,952.27 is: 331,053.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,368.99 : 581,346.77 = 239,952.27 : x
  2. Step 2: Convert to fraction form
    421,368.99/581,346.77 = 239,952.27/x
  3. Step 3: Cross multiply
    421,368.99x = 581,346.77 × 239,952.27
  4. Step 4: Simplify right side
    421,368.99x = 139,495,479,448.69
  5. Step 5: Solve for x
    x = 139,495,479,448.69/421,368.99
  6. Step 6: Final answer
    x = 331,053.03

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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.