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Finding the Fourth Proportional to 340,264.48, 510,396.72 and 90,940

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Solution

The fourth proportional to 340,264.48, 510,396.72 and 90,940 is: 136,410

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,264.48 : 510,396.72 = 90,940 : x
  2. Step 2: Convert to fraction form
    340,264.48/510,396.72 = 90,940/x
  3. Step 3: Cross multiply
    340,264.48x = 510,396.72 × 90,940
  4. Step 4: Simplify right side
    340,264.48x = 46,415,477,716.80
  5. Step 5: Solve for x
    x = 46,415,477,716.80/340,264.48
  6. Step 6: Final answer
    x = 136,410

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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.