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Finding the Fourth Proportional to 400,396.92, 552,547.79 and 219,108.88

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Solution

The fourth proportional to 400,396.92, 552,547.79 and 219,108.88 is: 302,370.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,396.92 : 552,547.79 = 219,108.88 : x
  2. Step 2: Convert to fraction form
    400,396.92/552,547.79 = 219,108.88/x
  3. Step 3: Cross multiply
    400,396.92x = 552,547.79 × 219,108.88
  4. Step 4: Simplify right side
    400,396.92x = 121,068,127,413.38
  5. Step 5: Solve for x
    x = 121,068,127,413.38/400,396.92
  6. Step 6: Final answer
    x = 302,370.28

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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.