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Finding the Fourth Proportional to 321,731.70, 482,597.55 and 286,302.30

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Solution

The fourth proportional to 321,731.70, 482,597.55 and 286,302.30 is: 429,453.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,731.70 : 482,597.55 = 286,302.30 : x
  2. Step 2: Convert to fraction form
    321,731.70/482,597.55 = 286,302.30/x
  3. Step 3: Cross multiply
    321,731.70x = 482,597.55 × 286,302.30
  4. Step 4: Simplify right side
    321,731.70x = 138,168,788,539.37
  5. Step 5: Solve for x
    x = 138,168,788,539.37/321,731.70
  6. Step 6: Final answer
    x = 429,453.45

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Similar ratio
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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.