Home / 287,541.58-396,810-158,484.72

Finding the Fourth Proportional to 287,541.58, 396,810 and 158,484.72

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Solution

The fourth proportional to 287,541.58, 396,810 and 158,484.72 is: 218,710.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,541.58 : 396,810 = 158,484.72 : x
  2. Step 2: Convert to fraction form
    287,541.58/396,810 = 158,484.72/x
  3. Step 3: Cross multiply
    287,541.58x = 396,810 × 158,484.72
  4. Step 4: Simplify right side
    287,541.58x = 62,888,321,743.20
  5. Step 5: Solve for x
    x = 62,888,321,743.20/287,541.58
  6. Step 6: Final answer
    x = 218,710.36

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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.