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Finding the Fourth Proportional to 401,904.21, 554,607.76 and 232,128.21

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Solution

The fourth proportional to 401,904.21, 554,607.76 and 232,128.21 is: 320,325.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,904.21 : 554,607.76 = 232,128.21 : x
  2. Step 2: Convert to fraction form
    401,904.21/554,607.76 = 232,128.21/x
  3. Step 3: Cross multiply
    401,904.21x = 554,607.76 × 232,128.21
  4. Step 4: Simplify right side
    401,904.21x = 128,740,106,580.91
  5. Step 5: Solve for x
    x = 128,740,106,580.91/401,904.21
  6. Step 6: Final answer
    x = 320,325.35

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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.