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Finding the Fourth Proportional to 391,468.68, 540,210.24 and 228,140.64

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Solution

The fourth proportional to 391,468.68, 540,210.24 and 228,140.64 is: 314,824.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,468.68 : 540,210.24 = 228,140.64 : x
  2. Step 2: Convert to fraction form
    391,468.68/540,210.24 = 228,140.64/x
  3. Step 3: Cross multiply
    391,468.68x = 540,210.24 × 228,140.64
  4. Step 4: Simplify right side
    391,468.68x = 123,243,909,888.15
  5. Step 5: Solve for x
    x = 123,243,909,888.15/391,468.68
  6. Step 6: Final answer
    x = 314,824.44

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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.