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Finding the Fourth Proportional to 252,802.56, 348,865.20 and 139,626.72

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Solution

The fourth proportional to 252,802.56, 348,865.20 and 139,626.72 is: 192,683.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,802.56 : 348,865.20 = 139,626.72 : x
  2. Step 2: Convert to fraction form
    252,802.56/348,865.20 = 139,626.72/x
  3. Step 3: Cross multiply
    252,802.56x = 348,865.20 × 139,626.72
  4. Step 4: Simplify right side
    252,802.56x = 48,710,903,598.14
  5. Step 5: Solve for x
    x = 48,710,903,598.14/252,802.56
  6. Step 6: Final answer
    x = 192,683.59

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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.