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Finding the Fourth Proportional to 314,399.81, 433,981.09 and 187,072.67

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Solution

The fourth proportional to 314,399.81, 433,981.09 and 187,072.67 is: 258,225.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,399.81 : 433,981.09 = 187,072.67 : x
  2. Step 2: Convert to fraction form
    314,399.81/433,981.09 = 187,072.67/x
  3. Step 3: Cross multiply
    314,399.81x = 433,981.09 × 187,072.67
  4. Step 4: Simplify right side
    314,399.81x = 81,186,002,554.60
  5. Step 5: Solve for x
    x = 81,186,002,554.60/314,399.81
  6. Step 6: Final answer
    x = 258,225.35

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1.5x scale

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.