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Finding the Fourth Proportional to 520,998.98, 781,489.94 and 166,008.20

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Solution

The fourth proportional to 520,998.98, 781,489.94 and 166,008.20 is: 249,009.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,998.98 : 781,489.94 = 166,008.20 : x
  2. Step 2: Convert to fraction form
    520,998.98/781,489.94 = 166,008.20/x
  3. Step 3: Cross multiply
    520,998.98x = 781,489.94 × 166,008.20
  4. Step 4: Simplify right side
    520,998.98x = 129,733,738,257.51
  5. Step 5: Solve for x
    x = 129,733,738,257.51/520,998.98
  6. Step 6: Final answer
    x = 249,009.58

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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.