Home / 210,890.40-291,035.28-115,401.12

Finding the Fourth Proportional to 210,890.40, 291,035.28 and 115,401.12

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Solution

The fourth proportional to 210,890.40, 291,035.28 and 115,401.12 is: 159,257.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,890.40 : 291,035.28 = 115,401.12 : x
  2. Step 2: Convert to fraction form
    210,890.40/291,035.28 = 115,401.12/x
  3. Step 3: Cross multiply
    210,890.40x = 291,035.28 × 115,401.12
  4. Step 4: Simplify right side
    210,890.40x = 33,585,797,271.51
  5. Step 5: Solve for x
    x = 33,585,797,271.51/210,890.40
  6. Step 6: Final answer
    x = 159,257.12

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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.