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Finding the Fourth Proportional to 487,991.40, 732,107.10 and 168,148.20

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Solution

The fourth proportional to 487,991.40, 732,107.10 and 168,148.20 is: 252,263.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,991.40 : 732,107.10 = 168,148.20 : x
  2. Step 2: Convert to fraction form
    487,991.40/732,107.10 = 168,148.20/x
  3. Step 3: Cross multiply
    487,991.40x = 732,107.10 × 168,148.20
  4. Step 4: Simplify right side
    487,991.40x = 123,102,491,072.22
  5. Step 5: Solve for x
    x = 123,102,491,072.22/487,991.40
  6. Step 6: Final answer
    x = 252,263.65

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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.