Home / 287,915.15-397,345.43-158,879.23

Finding the Fourth Proportional to 287,915.15, 397,345.43 and 158,879.23

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Solution

The fourth proportional to 287,915.15, 397,345.43 and 158,879.23 is: 219,265.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,915.15 : 397,345.43 = 158,879.23 : x
  2. Step 2: Convert to fraction form
    287,915.15/397,345.43 = 158,879.23/x
  3. Step 3: Cross multiply
    287,915.15x = 397,345.43 × 158,879.23
  4. Step 4: Simplify right side
    287,915.15x = 63,129,935,366.25
  5. Step 5: Solve for x
    x = 63,129,935,366.25/287,915.15
  6. Step 6: Final answer
    x = 219,265.76

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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.