Home / 279,106.34-385,163.13-151,779.20

Finding the Fourth Proportional to 279,106.34, 385,163.13 and 151,779.20

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Solution

The fourth proportional to 279,106.34, 385,163.13 and 151,779.20 is: 209,453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,106.34 : 385,163.13 = 151,779.20 : x
  2. Step 2: Convert to fraction form
    279,106.34/385,163.13 = 151,779.20/x
  3. Step 3: Cross multiply
    279,106.34x = 385,163.13 × 151,779.20
  4. Step 4: Simplify right side
    279,106.34x = 58,459,749,056.18
  5. Step 5: Solve for x
    x = 58,459,749,056.18/279,106.34
  6. Step 6: Final answer
    x = 209,453.32

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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.