Home / 210,816.03-315,717.34-120,585.21

Finding the Fourth Proportional to 210,816.03, 315,717.34 and 120,585.21

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Solution

The fourth proportional to 210,816.03, 315,717.34 and 120,585.21 is: 180,587.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,816.03 : 315,717.34 = 120,585.21 : x
  2. Step 2: Convert to fraction form
    210,816.03/315,717.34 = 120,585.21/x
  3. Step 3: Cross multiply
    210,816.03x = 315,717.34 × 120,585.21
  4. Step 4: Simplify right side
    210,816.03x = 38,070,841,744.54
  5. Step 5: Solve for x
    x = 38,070,841,744.54/210,816.03
  6. Step 6: Final answer
    x = 180,587.98

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1.5x scale

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.