Home / 282,977.52-390,519.36-155,662.80

Finding the Fourth Proportional to 282,977.52, 390,519.36 and 155,662.80

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Solution

The fourth proportional to 282,977.52, 390,519.36 and 155,662.80 is: 214,820.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,977.52 : 390,519.36 = 155,662.80 : x
  2. Step 2: Convert to fraction form
    282,977.52/390,519.36 = 155,662.80/x
  3. Step 3: Cross multiply
    282,977.52x = 390,519.36 × 155,662.80
  4. Step 4: Simplify right side
    282,977.52x = 60,789,337,031.81
  5. Step 5: Solve for x
    x = 60,789,337,031.81/282,977.52
  6. Step 6: Final answer
    x = 214,820.38

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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.