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Finding the Fourth Proportional to 398,068.76, 597,278.93 and 308,886.32

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Solution

The fourth proportional to 398,068.76, 597,278.93 and 308,886.32 is: 463,465.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,068.76 : 597,278.93 = 308,886.32 : x
  2. Step 2: Convert to fraction form
    398,068.76/597,278.93 = 308,886.32/x
  3. Step 3: Cross multiply
    398,068.76x = 597,278.93 × 308,886.32
  4. Step 4: Simplify right side
    398,068.76x = 184,491,290,701.24
  5. Step 5: Solve for x
    x = 184,491,290,701.24/398,068.76
  6. Step 6: Final answer
    x = 463,465.89

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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.