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Finding the Fourth Proportional to 426,433.32, 638,071.56 and 341,935.20

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Solution

The fourth proportional to 426,433.32, 638,071.56 and 341,935.20 is: 511,637.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,433.32 : 638,071.56 = 341,935.20 : x
  2. Step 2: Convert to fraction form
    426,433.32/638,071.56 = 341,935.20/x
  3. Step 3: Cross multiply
    426,433.32x = 638,071.56 × 341,935.20
  4. Step 4: Simplify right side
    426,433.32x = 218,179,126,482.91
  5. Step 5: Solve for x
    x = 218,179,126,482.91/426,433.32
  6. Step 6: Final answer
    x = 511,637.15

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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.