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Finding the Fourth Proportional to 578,208.40, 867,571.80 and 262,502.80

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Solution

The fourth proportional to 578,208.40, 867,571.80 and 262,502.80 is: 393,871.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,208.40 : 867,571.80 = 262,502.80 : x
  2. Step 2: Convert to fraction form
    578,208.40/867,571.80 = 262,502.80/x
  3. Step 3: Cross multiply
    578,208.40x = 867,571.80 × 262,502.80
  4. Step 4: Simplify right side
    578,208.40x = 227,740,026,701.04
  5. Step 5: Solve for x
    x = 227,740,026,701.04/578,208.40
  6. Step 6: Final answer
    x = 393,871.88

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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.