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Finding the Fourth Proportional to 401,444.62, 554,018.10 and 231,689.68

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Solution

The fourth proportional to 401,444.62, 554,018.10 and 231,689.68 is: 319,745.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,444.62 : 554,018.10 = 231,689.68 : x
  2. Step 2: Convert to fraction form
    401,444.62/554,018.10 = 231,689.68/x
  3. Step 3: Cross multiply
    401,444.62x = 554,018.10 × 231,689.68
  4. Step 4: Simplify right side
    401,444.62x = 128,360,276,303.21
  5. Step 5: Solve for x
    x = 128,360,276,303.21/401,444.62
  6. Step 6: Final answer
    x = 319,745.91

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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.