Home / 261,246.32-391,980.43-142,779.26

Finding the Fourth Proportional to 261,246.32, 391,980.43 and 142,779.26

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Solution

The fourth proportional to 261,246.32, 391,980.43 and 142,779.26 is: 214,229.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,246.32 : 391,980.43 = 142,779.26 : x
  2. Step 2: Convert to fraction form
    261,246.32/391,980.43 = 142,779.26/x
  3. Step 3: Cross multiply
    261,246.32x = 391,980.43 × 142,779.26
  4. Step 4: Simplify right side
    261,246.32x = 55,966,675,729.88
  5. Step 5: Solve for x
    x = 55,966,675,729.88/261,246.32
  6. Step 6: Final answer
    x = 214,229.53

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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.