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Finding the Fourth Proportional to 520,999.98, 781,491.44 and 166,009.20

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Solution

The fourth proportional to 520,999.98, 781,491.44 and 166,009.20 is: 249,011.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,999.98 : 781,491.44 = 166,009.20 : x
  2. Step 2: Convert to fraction form
    520,999.98/781,491.44 = 166,009.20/x
  3. Step 3: Cross multiply
    520,999.98x = 781,491.44 × 166,009.20
  4. Step 4: Simplify right side
    520,999.98x = 129,734,768,761.25
  5. Step 5: Solve for x
    x = 129,734,768,761.25/520,999.98
  6. Step 6: Final answer
    x = 249,011.08

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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.