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Finding the Fourth Proportional to 442,012.23, 662,723.10 and 138,303.54

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Solution

The fourth proportional to 442,012.23, 662,723.10 and 138,303.54 is: 207,362.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,012.23 : 662,723.10 = 138,303.54 : x
  2. Step 2: Convert to fraction form
    442,012.23/662,723.10 = 138,303.54/x
  3. Step 3: Cross multiply
    442,012.23x = 662,723.10 × 138,303.54
  4. Step 4: Simplify right side
    442,012.23x = 91,656,950,769.77
  5. Step 5: Solve for x
    x = 91,656,950,769.77/442,012.23
  6. Step 6: Final answer
    x = 207,362.93

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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.