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Finding the Fourth Proportional to 525,510.36, 724,973.94 and 321,571.08

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Solution

The fourth proportional to 525,510.36, 724,973.94 and 321,571.08 is: 443,627.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,510.36 : 724,973.94 = 321,571.08 : x
  2. Step 2: Convert to fraction form
    525,510.36/724,973.94 = 321,571.08/x
  3. Step 3: Cross multiply
    525,510.36x = 724,973.94 × 321,571.08
  4. Step 4: Simplify right side
    525,510.36x = 233,130,652,857.66
  5. Step 5: Solve for x
    x = 233,130,652,857.66/525,510.36
  6. Step 6: Final answer
    x = 443,627.13

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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.