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Finding the Fourth Proportional to 291,716.40, 437,574.60 and 221,732.40

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Solution

The fourth proportional to 291,716.40, 437,574.60 and 221,732.40 is: 332,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,716.40 : 437,574.60 = 221,732.40 : x
  2. Step 2: Convert to fraction form
    291,716.40/437,574.60 = 221,732.40/x
  3. Step 3: Cross multiply
    291,716.40x = 437,574.60 × 221,732.40
  4. Step 4: Simplify right side
    291,716.40x = 97,024,466,237.04
  5. Step 5: Solve for x
    x = 97,024,466,237.04/291,716.40
  6. Step 6: Final answer
    x = 332,598.60

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1.5x scale

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.