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Finding the Fourth Proportional to 321,368.10, 482,570.55 and 242,571.30

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Solution

The fourth proportional to 321,368.10, 482,570.55 and 242,571.30 is: 364,248.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,368.10 : 482,570.55 = 242,571.30 : x
  2. Step 2: Convert to fraction form
    321,368.10/482,570.55 = 242,571.30/x
  3. Step 3: Cross multiply
    321,368.10x = 482,570.55 × 242,571.30
  4. Step 4: Simplify right side
    321,368.10x = 117,057,765,655.22
  5. Step 5: Solve for x
    x = 117,057,765,655.22/321,368.10
  6. Step 6: Final answer
    x = 364,248.24

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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.