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Finding the Fourth Proportional to 243,021.60, 364,532.40 and 138,045.60

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Solution

The fourth proportional to 243,021.60, 364,532.40 and 138,045.60 is: 207,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,021.60 : 364,532.40 = 138,045.60 : x
  2. Step 2: Convert to fraction form
    243,021.60/364,532.40 = 138,045.60/x
  3. Step 3: Cross multiply
    243,021.60x = 364,532.40 × 138,045.60
  4. Step 4: Simplify right side
    243,021.60x = 50,322,093,877.44
  5. Step 5: Solve for x
    x = 50,322,093,877.44/243,021.60
  6. Step 6: Final answer
    x = 207,068.40

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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.