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Finding the Fourth Proportional to 338,510.40, 467,143.38 and 187,607.40

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Solution

The fourth proportional to 338,510.40, 467,143.38 and 187,607.40 is: 258,897.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,510.40 : 467,143.38 = 187,607.40 : x
  2. Step 2: Convert to fraction form
    338,510.40/467,143.38 = 187,607.40/x
  3. Step 3: Cross multiply
    338,510.40x = 467,143.38 × 187,607.40
  4. Step 4: Simplify right side
    338,510.40x = 87,639,554,949.01
  5. Step 5: Solve for x
    x = 87,639,554,949.01/338,510.40
  6. Step 6: Final answer
    x = 258,897.67

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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.