Home / 287,428.72-396,663.88-160,104.36

Finding the Fourth Proportional to 287,428.72, 396,663.88 and 160,104.36

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Solution

The fourth proportional to 287,428.72, 396,663.88 and 160,104.36 is: 220,950.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,428.72 : 396,663.88 = 160,104.36 : x
  2. Step 2: Convert to fraction form
    287,428.72/396,663.88 = 160,104.36/x
  3. Step 3: Cross multiply
    287,428.72x = 396,663.88 × 160,104.36
  4. Step 4: Simplify right side
    287,428.72x = 63,507,616,642.52
  5. Step 5: Solve for x
    x = 63,507,616,642.52/287,428.72
  6. Step 6: Final answer
    x = 220,950.84

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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.