Home / 442,628.20-663,855.90-147,140.20

Finding the Fourth Proportional to 442,628.20, 663,855.90 and 147,140.20

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Solution

The fourth proportional to 442,628.20, 663,855.90 and 147,140.20 is: 220,681.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,628.20 : 663,855.90 = 147,140.20 : x
  2. Step 2: Convert to fraction form
    442,628.20/663,855.90 = 147,140.20/x
  3. Step 3: Cross multiply
    442,628.20x = 663,855.90 × 147,140.20
  4. Step 4: Simplify right side
    442,628.20x = 97,679,889,897.18
  5. Step 5: Solve for x
    x = 97,679,889,897.18/442,628.20
  6. Step 6: Final answer
    x = 220,681.58

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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.