Home / 283,005.12-390,537.48-155,679.60

Finding the Fourth Proportional to 283,005.12, 390,537.48 and 155,679.60

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Solution

The fourth proportional to 283,005.12, 390,537.48 and 155,679.60 is: 214,832.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,005.12 : 390,537.48 = 155,679.60 : x
  2. Step 2: Convert to fraction form
    283,005.12/390,537.48 = 155,679.60/x
  3. Step 3: Cross multiply
    283,005.12x = 390,537.48 × 155,679.60
  4. Step 4: Simplify right side
    283,005.12x = 60,798,718,671.41
  5. Step 5: Solve for x
    x = 60,798,718,671.41/283,005.12
  6. Step 6: Final answer
    x = 214,832.58

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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.