Home / 400,971.93-553,341.25-219,690.72

Finding the Fourth Proportional to 400,971.93, 553,341.25 and 219,690.72

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Solution

The fourth proportional to 400,971.93, 553,341.25 and 219,690.72 is: 303,173.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,971.93 : 553,341.25 = 219,690.72 : x
  2. Step 2: Convert to fraction form
    400,971.93/553,341.25 = 219,690.72/x
  3. Step 3: Cross multiply
    400,971.93x = 553,341.25 × 219,690.72
  4. Step 4: Simplify right side
    400,971.93x = 121,563,939,967.84
  5. Step 5: Solve for x
    x = 121,563,939,967.84/400,971.93
  6. Step 6: Final answer
    x = 303,173.19

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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.