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Finding the Fourth Proportional to 400,419.72, 552,562.62 and 219,127.08

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Solution

The fourth proportional to 400,419.72, 552,562.62 and 219,127.08 is: 302,386.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,419.72 : 552,562.62 = 219,127.08 : x
  2. Step 2: Convert to fraction form
    400,419.72/552,562.62 = 219,127.08/x
  3. Step 3: Cross multiply
    400,419.72x = 552,562.62 × 219,127.08
  4. Step 4: Simplify right side
    400,419.72x = 121,081,433,437.75
  5. Step 5: Solve for x
    x = 121,081,433,437.75/400,419.72
  6. Step 6: Final answer
    x = 302,386.29

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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.