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Finding the Fourth Proportional to 210,865.60, 316,298.40 and 201,764.80

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Solution

The fourth proportional to 210,865.60, 316,298.40 and 201,764.80 is: 302,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,865.60 : 316,298.40 = 201,764.80 : x
  2. Step 2: Convert to fraction form
    210,865.60/316,298.40 = 201,764.80/x
  3. Step 3: Cross multiply
    210,865.60x = 316,298.40 × 201,764.80
  4. Step 4: Simplify right side
    210,865.60x = 63,817,883,416.32
  5. Step 5: Solve for x
    x = 63,817,883,416.32/210,865.60
  6. Step 6: Final answer
    x = 302,647.20

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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.