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Finding the Fourth Proportional to 436,159.81, 654,239.51 and 136,663.93

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Solution

The fourth proportional to 436,159.81, 654,239.51 and 136,663.93 is: 204,995.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,159.81 : 654,239.51 = 136,663.93 : x
  2. Step 2: Convert to fraction form
    436,159.81/654,239.51 = 136,663.93/x
  3. Step 3: Cross multiply
    436,159.81x = 654,239.51 × 136,663.93
  4. Step 4: Simplify right side
    436,159.81x = 89,410,938,643.36
  5. Step 5: Solve for x
    x = 89,410,938,643.36/436,159.81
  6. Step 6: Final answer
    x = 204,995.82

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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.