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Finding the Fourth Proportional to 369,222.40, 509,528.88 and 208,079.92

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Solution

The fourth proportional to 369,222.40, 509,528.88 and 208,079.92 is: 287,151.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,222.40 : 509,528.88 = 208,079.92 : x
  2. Step 2: Convert to fraction form
    369,222.40/509,528.88 = 208,079.92/x
  3. Step 3: Cross multiply
    369,222.40x = 509,528.88 × 208,079.92
  4. Step 4: Simplify right side
    369,222.40x = 106,022,728,588.09
  5. Step 5: Solve for x
    x = 106,022,728,588.09/369,222.40
  6. Step 6: Final answer
    x = 287,151.40

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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.