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Finding the Fourth Proportional to 242,210.40, 363,315.60 and 212,661.60

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Solution

The fourth proportional to 242,210.40, 363,315.60 and 212,661.60 is: 318,992.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,210.40 : 363,315.60 = 212,661.60 : x
  2. Step 2: Convert to fraction form
    242,210.40/363,315.60 = 212,661.60/x
  3. Step 3: Cross multiply
    242,210.40x = 363,315.60 × 212,661.60
  4. Step 4: Simplify right side
    242,210.40x = 77,263,276,800.96
  5. Step 5: Solve for x
    x = 77,263,276,800.96/242,210.40
  6. Step 6: Final answer
    x = 318,992.40

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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.