Home / 358,976.40-538,464.60-288,992.40

Finding the Fourth Proportional to 358,976.40, 538,464.60 and 288,992.40

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Solution

The fourth proportional to 358,976.40, 538,464.60 and 288,992.40 is: 433,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,976.40 : 538,464.60 = 288,992.40 : x
  2. Step 2: Convert to fraction form
    358,976.40/538,464.60 = 288,992.40/x
  3. Step 3: Cross multiply
    358,976.40x = 538,464.60 × 288,992.40
  4. Step 4: Simplify right side
    358,976.40x = 155,612,177,069.04
  5. Step 5: Solve for x
    x = 155,612,177,069.04/358,976.40
  6. Step 6: Final answer
    x = 433,488.60

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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.