Home / 347,780.20-520,892.70-268,637.80

Finding the Fourth Proportional to 347,780.20, 520,892.70 and 268,637.80

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Solution

The fourth proportional to 347,780.20, 520,892.70 and 268,637.80 is: 402,356.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,780.20 : 520,892.70 = 268,637.80 : x
  2. Step 2: Convert to fraction form
    347,780.20/520,892.70 = 268,637.80/x
  3. Step 3: Cross multiply
    347,780.20x = 520,892.70 × 268,637.80
  4. Step 4: Simplify right side
    347,780.20x = 139,931,468,964.06
  5. Step 5: Solve for x
    x = 139,931,468,964.06/347,780.20
  6. Step 6: Final answer
    x = 402,356.05

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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.