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Finding the Fourth Proportional to 400,710.67, 552,987.53 and 219,419.71

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Solution

The fourth proportional to 400,710.67, 552,987.53 and 219,419.71 is: 302,802.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,710.67 : 552,987.53 = 219,419.71 : x
  2. Step 2: Convert to fraction form
    400,710.67/552,987.53 = 219,419.71/x
  3. Step 3: Cross multiply
    400,710.67x = 552,987.53 × 219,419.71
  4. Step 4: Simplify right side
    400,710.67x = 121,336,362,369.12
  5. Step 5: Solve for x
    x = 121,336,362,369.12/400,710.67
  6. Step 6: Final answer
    x = 302,802.92

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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.