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Finding the Fourth Proportional to 346,317.17, 519,527.70 and 121,638

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Solution

The fourth proportional to 346,317.17, 519,527.70 and 121,638 is: 182,475.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,317.17 : 519,527.70 = 121,638 : x
  2. Step 2: Convert to fraction form
    346,317.17/519,527.70 = 121,638/x
  3. Step 3: Cross multiply
    346,317.17x = 519,527.70 × 121,638
  4. Step 4: Simplify right side
    346,317.17x = 63,194,310,372.60
  5. Step 5: Solve for x
    x = 63,194,310,372.60/346,317.17
  6. Step 6: Final answer
    x = 182,475.25

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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.