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Finding the Fourth Proportional to 369,081.60, 509,332.58 and 199,315.72

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Solution

The fourth proportional to 369,081.60, 509,332.58 and 199,315.72 is: 275,055.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,081.60 : 509,332.58 = 199,315.72 : x
  2. Step 2: Convert to fraction form
    369,081.60/509,332.58 = 199,315.72/x
  3. Step 3: Cross multiply
    369,081.60x = 509,332.58 × 199,315.72
  4. Step 4: Simplify right side
    369,081.60x = 101,517,989,902.16
  5. Step 5: Solve for x
    x = 101,517,989,902.16/369,081.60
  6. Step 6: Final answer
    x = 275,055.68

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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.