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Finding the Fourth Proportional to 405,259.80, 607,800.12 and 117,008.82

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Solution

The fourth proportional to 405,259.80, 607,800.12 and 117,008.82 is: 175,487.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,259.80 : 607,800.12 = 117,008.82 : x
  2. Step 2: Convert to fraction form
    405,259.80/607,800.12 = 117,008.82/x
  3. Step 3: Cross multiply
    405,259.80x = 607,800.12 × 117,008.82
  4. Step 4: Simplify right side
    405,259.80x = 71,117,974,837.06
  5. Step 5: Solve for x
    x = 71,117,974,837.06/405,259.80
  6. Step 6: Final answer
    x = 175,487.37

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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.