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Finding the Fourth Proportional to 210,869.60, 316,304.40 and 201,768.80

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Solution

The fourth proportional to 210,869.60, 316,304.40 and 201,768.80 is: 302,653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,869.60 : 316,304.40 = 201,768.80 : x
  2. Step 2: Convert to fraction form
    210,869.60/316,304.40 = 201,768.80/x
  3. Step 3: Cross multiply
    210,869.60x = 316,304.40 × 201,768.80
  4. Step 4: Simplify right side
    210,869.60x = 63,820,359,222.72
  5. Step 5: Solve for x
    x = 63,820,359,222.72/210,869.60
  6. Step 6: Final answer
    x = 302,653.20

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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.