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Finding the Fourth Proportional to 346,318.60, 518,603.10 and 276,334.60

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Solution

The fourth proportional to 346,318.60, 518,603.10 and 276,334.60 is: 413,803.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,318.60 : 518,603.10 = 276,334.60 : x
  2. Step 2: Convert to fraction form
    346,318.60/518,603.10 = 276,334.60/x
  3. Step 3: Cross multiply
    346,318.60x = 518,603.10 × 276,334.60
  4. Step 4: Simplify right side
    346,318.60x = 143,307,980,197.26
  5. Step 5: Solve for x
    x = 143,307,980,197.26/346,318.60
  6. Step 6: Final answer
    x = 413,803.88

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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.