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Finding the Fourth Proportional to 401,258.80, 601,977.30 and 135,011.80

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Solution

The fourth proportional to 401,258.80, 601,977.30 and 135,011.80 is: 202,547.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,258.80 : 601,977.30 = 135,011.80 : x
  2. Step 2: Convert to fraction form
    401,258.80/601,977.30 = 135,011.80/x
  3. Step 3: Cross multiply
    401,258.80x = 601,977.30 × 135,011.80
  4. Step 4: Simplify right side
    401,258.80x = 81,274,038,832.14
  5. Step 5: Solve for x
    x = 81,274,038,832.14/401,258.80
  6. Step 6: Final answer
    x = 202,547.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.