Home / 286,628.80-429,947.40-109,145.64

Finding the Fourth Proportional to 286,628.80, 429,947.40 and 109,145.64

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Solution

The fourth proportional to 286,628.80, 429,947.40 and 109,145.64 is: 163,720.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,628.80 : 429,947.40 = 109,145.64 : x
  2. Step 2: Convert to fraction form
    286,628.80/429,947.40 = 109,145.64/x
  3. Step 3: Cross multiply
    286,628.80x = 429,947.40 × 109,145.64
  4. Step 4: Simplify right side
    286,628.80x = 46,926,884,139.34
  5. Step 5: Solve for x
    x = 46,926,884,139.34/286,628.80
  6. Step 6: Final answer
    x = 163,720.06

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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.