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Finding the Fourth Proportional to 253,788.72, 350,228.16 and 139,070.16

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Solution

The fourth proportional to 253,788.72, 350,228.16 and 139,070.16 is: 191,916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,788.72 : 350,228.16 = 139,070.16 : x
  2. Step 2: Convert to fraction form
    253,788.72/350,228.16 = 139,070.16/x
  3. Step 3: Cross multiply
    253,788.72x = 350,228.16 × 139,070.16
  4. Step 4: Simplify right side
    253,788.72x = 48,706,286,247.71
  5. Step 5: Solve for x
    x = 48,706,286,247.71/253,788.72
  6. Step 6: Final answer
    x = 191,916.67

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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.