Home / 209,385.16-313,958.34-142,905.76

Finding the Fourth Proportional to 209,385.16, 313,958.34 and 142,905.76

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Solution

The fourth proportional to 209,385.16, 313,958.34 and 142,905.76 is: 214,277.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,385.16 : 313,958.34 = 142,905.76 : x
  2. Step 2: Convert to fraction form
    209,385.16/313,958.34 = 142,905.76/x
  3. Step 3: Cross multiply
    209,385.16x = 313,958.34 × 142,905.76
  4. Step 4: Simplify right side
    209,385.16x = 44,866,455,186.04
  5. Step 5: Solve for x
    x = 44,866,455,186.04/209,385.16
  6. Step 6: Final answer
    x = 214,277.15

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1.5x scale

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.