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Finding the Fourth Proportional to 391,343.65, 540,055.45 and 228,096.75

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Solution

The fourth proportional to 391,343.65, 540,055.45 and 228,096.75 is: 314,774.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,343.65 : 540,055.45 = 228,096.75 : x
  2. Step 2: Convert to fraction form
    391,343.65/540,055.45 = 228,096.75/x
  3. Step 3: Cross multiply
    391,343.65x = 540,055.45 × 228,096.75
  4. Step 4: Simplify right side
    391,343.65x = 123,184,895,275.12
  5. Step 5: Solve for x
    x = 123,184,895,275.12/391,343.65
  6. Step 6: Final answer
    x = 314,774.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.