Home / 284,875.38-393,112.04-155,788.20

Finding the Fourth Proportional to 284,875.38, 393,112.04 and 155,788.20

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Solution

The fourth proportional to 284,875.38, 393,112.04 and 155,788.20 is: 214,978.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,875.38 : 393,112.04 = 155,788.20 : x
  2. Step 2: Convert to fraction form
    284,875.38/393,112.04 = 155,788.20/x
  3. Step 3: Cross multiply
    284,875.38x = 393,112.04 × 155,788.20
  4. Step 4: Simplify right side
    284,875.38x = 61,242,216,330.99
  5. Step 5: Solve for x
    x = 61,242,216,330.99/284,875.38
  6. Step 6: Final answer
    x = 214,978.97

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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.