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Finding the Fourth Proportional to 245,007.84, 368,950.80 and 213,790.20

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Solution

The fourth proportional to 245,007.84, 368,950.80 and 213,790.20 is: 321,940.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,007.84 : 368,950.80 = 213,790.20 : x
  2. Step 2: Convert to fraction form
    245,007.84/368,950.80 = 213,790.20/x
  3. Step 3: Cross multiply
    245,007.84x = 368,950.80 × 213,790.20
  4. Step 4: Simplify right side
    245,007.84x = 78,878,065,322.16
  5. Step 5: Solve for x
    x = 78,878,065,322.16/245,007.84
  6. Step 6: Final answer
    x = 321,940.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.