Home / 282,753.21-390,189.54-155,427.88

Finding the Fourth Proportional to 282,753.21, 390,189.54 and 155,427.88

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Solution

The fourth proportional to 282,753.21, 390,189.54 and 155,427.88 is: 214,485.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,753.21 : 390,189.54 = 155,427.88 : x
  2. Step 2: Convert to fraction form
    282,753.21/390,189.54 = 155,427.88/x
  3. Step 3: Cross multiply
    282,753.21x = 390,189.54 × 155,427.88
  4. Step 4: Simplify right side
    282,753.21x = 60,646,333,000.38
  5. Step 5: Solve for x
    x = 60,646,333,000.38/282,753.21
  6. Step 6: Final answer
    x = 214,485.04

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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.