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Finding the Fourth Proportional to 442,519.76, 663,783.50 and 143,000.30

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Solution

The fourth proportional to 442,519.76, 663,783.50 and 143,000.30 is: 214,501.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,519.76 : 663,783.50 = 143,000.30 : x
  2. Step 2: Convert to fraction form
    442,519.76/663,783.50 = 143,000.30/x
  3. Step 3: Cross multiply
    442,519.76x = 663,783.50 × 143,000.30
  4. Step 4: Simplify right side
    442,519.76x = 94,921,236,673.63
  5. Step 5: Solve for x
    x = 94,921,236,673.63/442,519.76
  6. Step 6: Final answer
    x = 214,501.69

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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.