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Finding the Fourth Proportional to 213,145.60, 298,956.80 and 213,145.60

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Solution

The fourth proportional to 213,145.60, 298,956.80 and 213,145.60 is: 298,956.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,145.60 : 298,956.80 = 213,145.60 : x
  2. Step 2: Convert to fraction form
    213,145.60/298,956.80 = 213,145.60/x
  3. Step 3: Cross multiply
    213,145.60x = 298,956.80 × 213,145.60
  4. Step 4: Simplify right side
    213,145.60x = 63,721,326,510.08
  5. Step 5: Solve for x
    x = 63,721,326,510.08/213,145.60
  6. Step 6: Final answer
    x = 298,956.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.