Home / 208,623.20-312,934.80-200,458.40

Finding the Fourth Proportional to 208,623.20, 312,934.80 and 200,458.40

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Solution

The fourth proportional to 208,623.20, 312,934.80 and 200,458.40 is: 300,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,623.20 : 312,934.80 = 200,458.40 : x
  2. Step 2: Convert to fraction form
    208,623.20/312,934.80 = 200,458.40/x
  3. Step 3: Cross multiply
    208,623.20x = 312,934.80 × 200,458.40
  4. Step 4: Simplify right side
    208,623.20x = 62,730,409,312.32
  5. Step 5: Solve for x
    x = 62,730,409,312.32/208,623.20
  6. Step 6: Final answer
    x = 300,687.60

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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.