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Finding the Fourth Proportional to 556,742.40, 835,106.31 and 136,021.92

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Solution

The fourth proportional to 556,742.40, 835,106.31 and 136,021.92 is: 204,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,742.40 : 835,106.31 = 136,021.92 : x
  2. Step 2: Convert to fraction form
    556,742.40/835,106.31 = 136,021.92/x
  3. Step 3: Cross multiply
    556,742.40x = 835,106.31 × 136,021.92
  4. Step 4: Simplify right side
    556,742.40x = 113,592,763,690.32
  5. Step 5: Solve for x
    x = 113,592,763,690.32/556,742.40
  6. Step 6: Final answer
    x = 204,031.10

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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.