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Finding the Fourth Proportional to 235,486.54, 352,457.60 and 128,706.94

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Solution

The fourth proportional to 235,486.54, 352,457.60 and 128,706.94 is: 192,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,486.54 : 352,457.60 = 128,706.94 : x
  2. Step 2: Convert to fraction form
    235,486.54/352,457.60 = 128,706.94/x
  3. Step 3: Cross multiply
    235,486.54x = 352,457.60 × 128,706.94
  4. Step 4: Simplify right side
    235,486.54x = 45,363,739,175.74
  5. Step 5: Solve for x
    x = 45,363,739,175.74/235,486.54
  6. Step 6: Final answer
    x = 192,638.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.