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Finding the Fourth Proportional to 369,079.60, 509,329.82 and 199,313.72

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Solution

The fourth proportional to 369,079.60, 509,329.82 and 199,313.72 is: 275,052.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,079.60 : 509,329.82 = 199,313.72 : x
  2. Step 2: Convert to fraction form
    369,079.60/509,329.82 = 199,313.72/x
  3. Step 3: Cross multiply
    369,079.60x = 509,329.82 × 199,313.72
  4. Step 4: Simplify right side
    369,079.60x = 101,516,421,131.13
  5. Step 5: Solve for x
    x = 101,516,421,131.13/369,079.60
  6. Step 6: Final answer
    x = 275,052.92

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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.