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Finding the Fourth Proportional to 235,383.60, 353,075.40 and 140,905.20

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Solution

The fourth proportional to 235,383.60, 353,075.40 and 140,905.20 is: 211,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,383.60 : 353,075.40 = 140,905.20 : x
  2. Step 2: Convert to fraction form
    235,383.60/353,075.40 = 140,905.20/x
  3. Step 3: Cross multiply
    235,383.60x = 353,075.40 × 140,905.20
  4. Step 4: Simplify right side
    235,383.60x = 49,750,159,852.08
  5. Step 5: Solve for x
    x = 49,750,159,852.08/235,383.60
  6. Step 6: Final answer
    x = 211,357.80

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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.