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Finding the Fourth Proportional to 307,492.20, 424,168.65 and 180,143.19

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Solution

The fourth proportional to 307,492.20, 424,168.65 and 180,143.19 is: 248,497.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,492.20 : 424,168.65 = 180,143.19 : x
  2. Step 2: Convert to fraction form
    307,492.20/424,168.65 = 180,143.19/x
  3. Step 3: Cross multiply
    307,492.20x = 424,168.65 × 180,143.19
  4. Step 4: Simplify right side
    307,492.20x = 76,411,093,708.99
  5. Step 5: Solve for x
    x = 76,411,093,708.99/307,492.20
  6. Step 6: Final answer
    x = 248,497.67

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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.