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Finding the Fourth Proportional to 212,244.48, 318,366.72 and 87,448.32

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Solution

The fourth proportional to 212,244.48, 318,366.72 and 87,448.32 is: 131,172.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,244.48 : 318,366.72 = 87,448.32 : x
  2. Step 2: Convert to fraction form
    212,244.48/318,366.72 = 87,448.32/x
  3. Step 3: Cross multiply
    212,244.48x = 318,366.72 × 87,448.32
  4. Step 4: Simplify right side
    212,244.48x = 27,840,634,807.91
  5. Step 5: Solve for x
    x = 27,840,634,807.91/212,244.48
  6. Step 6: Final answer
    x = 131,172.48

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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.