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Finding the Fourth Proportional to 405,199.50, 607,825.16 and 155,881.50

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Solution

The fourth proportional to 405,199.50, 607,825.16 and 155,881.50 is: 233,832.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,199.50 : 607,825.16 = 155,881.50 : x
  2. Step 2: Convert to fraction form
    405,199.50/607,825.16 = 155,881.50/x
  3. Step 3: Cross multiply
    405,199.50x = 607,825.16 × 155,881.50
  4. Step 4: Simplify right side
    405,199.50x = 94,748,695,029.12
  5. Step 5: Solve for x
    x = 94,748,695,029.12/405,199.50
  6. Step 6: Final answer
    x = 233,832.21

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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.