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Finding the Fourth Proportional to 287,893.55, 397,291.79 and 158,828.51

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Solution

The fourth proportional to 287,893.55, 397,291.79 and 158,828.51 is: 219,182.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,893.55 : 397,291.79 = 158,828.51 : x
  2. Step 2: Convert to fraction form
    287,893.55/397,291.79 = 158,828.51/x
  3. Step 3: Cross multiply
    287,893.55x = 397,291.79 × 158,828.51
  4. Step 4: Simplify right side
    287,893.55x = 63,101,262,246.79
  5. Step 5: Solve for x
    x = 63,101,262,246.79/287,893.55
  6. Step 6: Final answer
    x = 219,182.62

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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.