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Finding the Fourth Proportional to 307,353.04, 423,908.70 and 272,933.98

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Solution

The fourth proportional to 307,353.04, 423,908.70 and 272,933.98 is: 376,437.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,353.04 : 423,908.70 = 272,933.98 : x
  2. Step 2: Convert to fraction form
    307,353.04/423,908.70 = 272,933.98/x
  3. Step 3: Cross multiply
    307,353.04x = 423,908.70 × 272,933.98
  4. Step 4: Simplify right side
    307,353.04x = 115,699,088,647.63
  5. Step 5: Solve for x
    x = 115,699,088,647.63/307,353.04
  6. Step 6: Final answer
    x = 376,437.11

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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.