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Finding the Fourth Proportional to 346,715.60, 520,073.40 and 276,731.60

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Solution

The fourth proportional to 346,715.60, 520,073.40 and 276,731.60 is: 415,097.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,715.60 : 520,073.40 = 276,731.60 : x
  2. Step 2: Convert to fraction form
    346,715.60/520,073.40 = 276,731.60/x
  3. Step 3: Cross multiply
    346,715.60x = 520,073.40 × 276,731.60
  4. Step 4: Simplify right side
    346,715.60x = 143,920,744,099.44
  5. Step 5: Solve for x
    x = 143,920,744,099.44/346,715.60
  6. Step 6: Final answer
    x = 415,097.40

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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.