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Finding the Fourth Proportional to 450,065.28, 621,090.24 and 256,467.42

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Solution

The fourth proportional to 450,065.28, 621,090.24 and 256,467.42 is: 353,925.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,065.28 : 621,090.24 = 256,467.42 : x
  2. Step 2: Convert to fraction form
    450,065.28/621,090.24 = 256,467.42/x
  3. Step 3: Cross multiply
    450,065.28x = 621,090.24 × 256,467.42
  4. Step 4: Simplify right side
    450,065.28x = 159,289,411,439.98
  5. Step 5: Solve for x
    x = 159,289,411,439.98/450,065.28
  6. Step 6: Final answer
    x = 353,925.13

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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.