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Finding the Fourth Proportional to 321,885.10, 482,827.65 and 202,912.30

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Solution

The fourth proportional to 321,885.10, 482,827.65 and 202,912.30 is: 304,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,885.10 : 482,827.65 = 202,912.30 : x
  2. Step 2: Convert to fraction form
    321,885.10/482,827.65 = 202,912.30/x
  3. Step 3: Cross multiply
    321,885.10x = 482,827.65 × 202,912.30
  4. Step 4: Simplify right side
    321,885.10x = 97,971,668,965.10
  5. Step 5: Solve for x
    x = 97,971,668,965.10/321,885.10
  6. Step 6: Final answer
    x = 304,368.45

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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.