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Finding the Fourth Proportional to 252,505.70, 348,457.47 and 139,328.36

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Solution

The fourth proportional to 252,505.70, 348,457.47 and 139,328.36 is: 192,272.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,505.70 : 348,457.47 = 139,328.36 : x
  2. Step 2: Convert to fraction form
    252,505.70/348,457.47 = 139,328.36/x
  3. Step 3: Cross multiply
    252,505.70x = 348,457.47 × 139,328.36
  4. Step 4: Simplify right side
    252,505.70x = 48,550,007,824.85
  5. Step 5: Solve for x
    x = 48,550,007,824.85/252,505.70
  6. Step 6: Final answer
    x = 192,272.92

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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.