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Finding the Fourth Proportional to 346,803.20, 520,096.80 and 136,505.60

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Solution

The fourth proportional to 346,803.20, 520,096.80 and 136,505.60 is: 204,715.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,803.20 : 520,096.80 = 136,505.60 : x
  2. Step 2: Convert to fraction form
    346,803.20/520,096.80 = 136,505.60/x
  3. Step 3: Cross multiply
    346,803.20x = 520,096.80 × 136,505.60
  4. Step 4: Simplify right side
    346,803.20x = 70,996,125,742.08
  5. Step 5: Solve for x
    x = 70,996,125,742.08/346,803.20
  6. Step 6: Final answer
    x = 204,715.89

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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.