Home / 210,813.03-315,712.85-120,582.32

Finding the Fourth Proportional to 210,813.03, 315,712.85 and 120,582.32

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Solution

The fourth proportional to 210,813.03, 315,712.85 and 120,582.32 is: 180,583.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,813.03 : 315,712.85 = 120,582.32 : x
  2. Step 2: Convert to fraction form
    210,813.03/315,712.85 = 120,582.32/x
  3. Step 3: Cross multiply
    210,813.03x = 315,712.85 × 120,582.32
  4. Step 4: Simplify right side
    210,813.03x = 38,069,385,725.34
  5. Step 5: Solve for x
    x = 38,069,385,725.34/210,813.03
  6. Step 6: Final answer
    x = 180,583.65

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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.