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Finding the Fourth Proportional to 228,792.25, 315,733.31 and 139,368.25

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Solution

The fourth proportional to 228,792.25, 315,733.31 and 139,368.25 is: 192,328.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,792.25 : 315,733.31 = 139,368.25 : x
  2. Step 2: Convert to fraction form
    228,792.25/315,733.31 = 139,368.25/x
  3. Step 3: Cross multiply
    228,792.25x = 315,733.31 × 139,368.25
  4. Step 4: Simplify right side
    228,792.25x = 44,003,198,881.41
  5. Step 5: Solve for x
    x = 44,003,198,881.41/228,792.25
  6. Step 6: Final answer
    x = 192,328.19

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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.