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Finding the Fourth Proportional to 321,907.10, 482,860.65 and 97,302.20

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Solution

The fourth proportional to 321,907.10, 482,860.65 and 97,302.20 is: 145,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,907.10 : 482,860.65 = 97,302.20 : x
  2. Step 2: Convert to fraction form
    321,907.10/482,860.65 = 97,302.20/x
  3. Step 3: Cross multiply
    321,907.10x = 482,860.65 × 97,302.20
  4. Step 4: Simplify right side
    321,907.10x = 46,983,403,538.43
  5. Step 5: Solve for x
    x = 46,983,403,538.43/321,907.10
  6. Step 6: Final answer
    x = 145,953.30

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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.