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Finding the Fourth Proportional to 287,842.04, 397,212.30 and 158,785.68

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Solution

The fourth proportional to 287,842.04, 397,212.30 and 158,785.68 is: 219,118.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,842.04 : 397,212.30 = 158,785.68 : x
  2. Step 2: Convert to fraction form
    287,842.04/397,212.30 = 158,785.68/x
  3. Step 3: Cross multiply
    287,842.04x = 397,212.30 × 158,785.68
  4. Step 4: Simplify right side
    287,842.04x = 63,071,625,159.86
  5. Step 5: Solve for x
    x = 63,071,625,159.86/287,842.04
  6. Step 6: Final answer
    x = 219,118.88

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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.