Home / 279,140.15-385,212.34-151,817.87

Finding the Fourth Proportional to 279,140.15, 385,212.34 and 151,817.87

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Solution

The fourth proportional to 279,140.15, 385,212.34 and 151,817.87 is: 209,508.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,140.15 : 385,212.34 = 151,817.87 : x
  2. Step 2: Convert to fraction form
    279,140.15/385,212.34 = 151,817.87/x
  3. Step 3: Cross multiply
    279,140.15x = 385,212.34 × 151,817.87
  4. Step 4: Simplify right side
    279,140.15x = 58,482,118,109.32
  5. Step 5: Solve for x
    x = 58,482,118,109.32/279,140.15
  6. Step 6: Final answer
    x = 209,508.08

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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.