Home / 401,411.43-553,943.21-231,641.91

Finding the Fourth Proportional to 401,411.43, 553,943.21 and 231,641.91

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Solution

The fourth proportional to 401,411.43, 553,943.21 and 231,641.91 is: 319,663.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,411.43 : 553,943.21 = 231,641.91 : x
  2. Step 2: Convert to fraction form
    401,411.43/553,943.21 = 231,641.91/x
  3. Step 3: Cross multiply
    401,411.43x = 553,943.21 × 231,641.91
  4. Step 4: Simplify right side
    401,411.43x = 128,316,462,037.72
  5. Step 5: Solve for x
    x = 128,316,462,037.72/401,411.43
  6. Step 6: Final answer
    x = 319,663.20

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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.