Home / 239,779.80-330,904.14-130,890.60

Finding the Fourth Proportional to 239,779.80, 330,904.14 and 130,890.60

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Solution

The fourth proportional to 239,779.80, 330,904.14 and 130,890.60 is: 180,633.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,779.80 : 330,904.14 = 130,890.60 : x
  2. Step 2: Convert to fraction form
    239,779.80/330,904.14 = 130,890.60/x
  3. Step 3: Cross multiply
    239,779.80x = 330,904.14 × 130,890.60
  4. Step 4: Simplify right side
    239,779.80x = 43,312,241,427.08
  5. Step 5: Solve for x
    x = 43,312,241,427.08/239,779.80
  6. Step 6: Final answer
    x = 180,633.40

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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.