Home / 320,985.14-443,102.55-212,155.03

Finding the Fourth Proportional to 320,985.14, 443,102.55 and 212,155.03

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Solution

The fourth proportional to 320,985.14, 443,102.55 and 212,155.03 is: 292,868.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,985.14 : 443,102.55 = 212,155.03 : x
  2. Step 2: Convert to fraction form
    320,985.14/443,102.55 = 212,155.03/x
  3. Step 3: Cross multiply
    320,985.14x = 443,102.55 × 212,155.03
  4. Step 4: Simplify right side
    320,985.14x = 94,006,432,572.81
  5. Step 5: Solve for x
    x = 94,006,432,572.81/320,985.14
  6. Step 6: Final answer
    x = 292,868.49

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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.