Home / 401,445.12-554,018.79-231,690.18

Finding the Fourth Proportional to 401,445.12, 554,018.79 and 231,690.18

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Solution

The fourth proportional to 401,445.12, 554,018.79 and 231,690.18 is: 319,746.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,445.12 : 554,018.79 = 231,690.18 : x
  2. Step 2: Convert to fraction form
    401,445.12/554,018.79 = 231,690.18/x
  3. Step 3: Cross multiply
    401,445.12x = 554,018.79 × 231,690.18
  4. Step 4: Simplify right side
    401,445.12x = 128,360,713,178.48
  5. Step 5: Solve for x
    x = 128,360,713,178.48/401,445.12
  6. Step 6: Final answer
    x = 319,746.60

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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.