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Finding the Fourth Proportional to 611,247.15, 843,530.40 and 339,332.58

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Solution

The fourth proportional to 611,247.15, 843,530.40 and 339,332.58 is: 468,284.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,247.15 : 843,530.40 = 339,332.58 : x
  2. Step 2: Convert to fraction form
    611,247.15/843,530.40 = 339,332.58/x
  3. Step 3: Cross multiply
    611,247.15x = 843,530.40 × 339,332.58
  4. Step 4: Simplify right side
    611,247.15x = 286,237,346,940.43
  5. Step 5: Solve for x
    x = 286,237,346,940.43/611,247.15
  6. Step 6: Final answer
    x = 468,284.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.