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Finding the Fourth Proportional to 260,779.96, 391,169.93 and 142,386.71

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Solution

The fourth proportional to 260,779.96, 391,169.93 and 142,386.71 is: 213,580.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,779.96 : 391,169.93 = 142,386.71 : x
  2. Step 2: Convert to fraction form
    260,779.96/391,169.93 = 142,386.71/x
  3. Step 3: Cross multiply
    260,779.96x = 391,169.93 × 142,386.71
  4. Step 4: Simplify right side
    260,779.96x = 55,697,400,117.57
  5. Step 5: Solve for x
    x = 55,697,400,117.57/260,779.96
  6. Step 6: Final answer
    x = 213,580.07

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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.