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Finding the Fourth Proportional to 370,969.16, 511,890.90 and 220,037

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Solution

The fourth proportional to 370,969.16, 511,890.90 and 220,037 is: 303,623.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,969.16 : 511,890.90 = 220,037 : x
  2. Step 2: Convert to fraction form
    370,969.16/511,890.90 = 220,037/x
  3. Step 3: Cross multiply
    370,969.16x = 511,890.90 × 220,037
  4. Step 4: Simplify right side
    370,969.16x = 112,634,937,963.30
  5. Step 5: Solve for x
    x = 112,634,937,963.30/370,969.16
  6. Step 6: Final answer
    x = 303,623.45

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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.