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Finding the Fourth Proportional to 437,719.80, 656,190.90 and 260,038.20

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Solution

The fourth proportional to 437,719.80, 656,190.90 and 260,038.20 is: 389,826.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,719.80 : 656,190.90 = 260,038.20 : x
  2. Step 2: Convert to fraction form
    437,719.80/656,190.90 = 260,038.20/x
  3. Step 3: Cross multiply
    437,719.80x = 656,190.90 × 260,038.20
  4. Step 4: Simplify right side
    437,719.80x = 170,634,700,492.38
  5. Step 5: Solve for x
    x = 170,634,700,492.38/437,719.80
  6. Step 6: Final answer
    x = 389,826.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.