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Finding the Fourth Proportional to 287,544.57, 396,814.14 and 158,487.72

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Solution

The fourth proportional to 287,544.57, 396,814.14 and 158,487.72 is: 218,714.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,544.57 : 396,814.14 = 158,487.72 : x
  2. Step 2: Convert to fraction form
    287,544.57/396,814.14 = 158,487.72/x
  3. Step 3: Cross multiply
    287,544.57x = 396,814.14 × 158,487.72
  4. Step 4: Simplify right side
    287,544.57x = 62,890,168,312.36
  5. Step 5: Solve for x
    x = 62,890,168,312.36/287,544.57
  6. Step 6: Final answer
    x = 218,714.51

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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.