Home / 282,741.88-390,181.50-155,416.12

Finding the Fourth Proportional to 282,741.88, 390,181.50 and 155,416.12

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Solution

The fourth proportional to 282,741.88, 390,181.50 and 155,416.12 is: 214,472.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,741.88 : 390,181.50 = 155,416.12 : x
  2. Step 2: Convert to fraction form
    282,741.88/390,181.50 = 155,416.12/x
  3. Step 3: Cross multiply
    282,741.88x = 390,181.50 × 155,416.12
  4. Step 4: Simplify right side
    282,741.88x = 60,640,494,825.78
  5. Step 5: Solve for x
    x = 60,640,494,825.78/282,741.88
  6. Step 6: Final answer
    x = 214,472.98

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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.