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Finding the Fourth Proportional to 346,085.80, 519,128.70 and 121,699.60

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Solution

The fourth proportional to 346,085.80, 519,128.70 and 121,699.60 is: 182,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,085.80 : 519,128.70 = 121,699.60 : x
  2. Step 2: Convert to fraction form
    346,085.80/519,128.70 = 121,699.60/x
  3. Step 3: Cross multiply
    346,085.80x = 519,128.70 × 121,699.60
  4. Step 4: Simplify right side
    346,085.80x = 63,177,755,138.52
  5. Step 5: Solve for x
    x = 63,177,755,138.52/346,085.80
  6. Step 6: Final answer
    x = 182,549.40

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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.