Home / 520,221.12-780,347.70-141,140.36

Finding the Fourth Proportional to 520,221.12, 780,347.70 and 141,140.36

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Solution

The fourth proportional to 520,221.12, 780,347.70 and 141,140.36 is: 211,714.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,221.12 : 780,347.70 = 141,140.36 : x
  2. Step 2: Convert to fraction form
    520,221.12/780,347.70 = 141,140.36/x
  3. Step 3: Cross multiply
    520,221.12x = 780,347.70 × 141,140.36
  4. Step 4: Simplify right side
    520,221.12x = 110,138,551,401.43
  5. Step 5: Solve for x
    x = 110,138,551,401.43/520,221.12
  6. Step 6: Final answer
    x = 211,714.88

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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.