Home / 279,106.21-385,162.95-151,779.07

Finding the Fourth Proportional to 279,106.21, 385,162.95 and 151,779.07

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Solution

The fourth proportional to 279,106.21, 385,162.95 and 151,779.07 is: 209,453.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,106.21 : 385,162.95 = 151,779.07 : x
  2. Step 2: Convert to fraction form
    279,106.21/385,162.95 = 151,779.07/x
  3. Step 3: Cross multiply
    279,106.21x = 385,162.95 × 151,779.07
  4. Step 4: Simplify right side
    279,106.21x = 58,459,673,386.55
  5. Step 5: Solve for x
    x = 58,459,673,386.55/279,106.21
  6. Step 6: Final answer
    x = 209,453.15

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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.