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Finding the Fourth Proportional to 369,130.53, 509,400.18 and 199,364.66

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Solution

The fourth proportional to 369,130.53, 509,400.18 and 199,364.66 is: 275,123.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,130.53 : 509,400.18 = 199,364.66 : x
  2. Step 2: Convert to fraction form
    369,130.53/509,400.18 = 199,364.66/x
  3. Step 3: Cross multiply
    369,130.53x = 509,400.18 × 199,364.66
  4. Step 4: Simplify right side
    369,130.53x = 101,556,391,142.64
  5. Step 5: Solve for x
    x = 101,556,391,142.64/369,130.53
  6. Step 6: Final answer
    x = 275,123.25

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1.5x scale

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.