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Finding the Fourth Proportional to 439,057.40, 657,030.90 and 299,089.40

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Solution

The fourth proportional to 439,057.40, 657,030.90 and 299,089.40 is: 447,574.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,057.40 : 657,030.90 = 299,089.40 : x
  2. Step 2: Convert to fraction form
    439,057.40/657,030.90 = 299,089.40/x
  3. Step 3: Cross multiply
    439,057.40x = 657,030.90 × 299,089.40
  4. Step 4: Simplify right side
    439,057.40x = 196,510,977,662.46
  5. Step 5: Solve for x
    x = 196,510,977,662.46/439,057.40
  6. Step 6: Final answer
    x = 447,574.69

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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.