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Finding the Fourth Proportional to 525,409.31, 725,065.66 and 299,054.81

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Solution

The fourth proportional to 525,409.31, 725,065.66 and 299,054.81 is: 412,696.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,409.31 : 725,065.66 = 299,054.81 : x
  2. Step 2: Convert to fraction form
    525,409.31/725,065.66 = 299,054.81/x
  3. Step 3: Cross multiply
    525,409.31x = 725,065.66 × 299,054.81
  4. Step 4: Simplify right side
    525,409.31x = 216,834,375,375.31
  5. Step 5: Solve for x
    x = 216,834,375,375.31/525,409.31
  6. Step 6: Final answer
    x = 412,696.10

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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.