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Finding the Fourth Proportional to 401,539.86, 554,123.45 and 248,547.56

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Solution

The fourth proportional to 401,539.86, 554,123.45 and 248,547.56 is: 342,994.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,539.86 : 554,123.45 = 248,547.56 : x
  2. Step 2: Convert to fraction form
    401,539.86/554,123.45 = 248,547.56/x
  3. Step 3: Cross multiply
    401,539.86x = 554,123.45 × 248,547.56
  4. Step 4: Simplify right side
    401,539.86x = 137,726,029,287.03
  5. Step 5: Solve for x
    x = 137,726,029,287.03/401,539.86
  6. Step 6: Final answer
    x = 342,994.66

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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.