Home / 282,731.48-390,164.98-155,404.34

Finding the Fourth Proportional to 282,731.48, 390,164.98 and 155,404.34

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Solution

The fourth proportional to 282,731.48, 390,164.98 and 155,404.34 is: 214,455.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,731.48 : 390,164.98 = 155,404.34 : x
  2. Step 2: Convert to fraction form
    282,731.48/390,164.98 = 155,404.34/x
  3. Step 3: Cross multiply
    282,731.48x = 390,164.98 × 155,404.34
  4. Step 4: Simplify right side
    282,731.48x = 60,633,331,208.01
  5. Step 5: Solve for x
    x = 60,633,331,208.01/282,731.48
  6. Step 6: Final answer
    x = 214,455.54

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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.