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Finding the Fourth Proportional to 385,450.02, 578,324.07 and 148,726.98

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Solution

The fourth proportional to 385,450.02, 578,324.07 and 148,726.98 is: 223,147.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,450.02 : 578,324.07 = 148,726.98 : x
  2. Step 2: Convert to fraction form
    385,450.02/578,324.07 = 148,726.98/x
  3. Step 3: Cross multiply
    385,450.02x = 578,324.07 × 148,726.98
  4. Step 4: Simplify right side
    385,450.02x = 86,012,392,392.41
  5. Step 5: Solve for x
    x = 86,012,392,392.41/385,450.02
  6. Step 6: Final answer
    x = 223,147.98

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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.