Home / 401,454.86-553,967.79-231,743.66

Finding the Fourth Proportional to 401,454.86, 553,967.79 and 231,743.66

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Solution

The fourth proportional to 401,454.86, 553,967.79 and 231,743.66 is: 319,783.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,454.86 : 553,967.79 = 231,743.66 : x
  2. Step 2: Convert to fraction form
    401,454.86/553,967.79 = 231,743.66/x
  3. Step 3: Cross multiply
    401,454.86x = 553,967.79 × 231,743.66
  4. Step 4: Simplify right side
    401,454.86x = 128,378,523,176.71
  5. Step 5: Solve for x
    x = 128,378,523,176.71/401,454.86
  6. Step 6: Final answer
    x = 319,783.21

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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.