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Finding the Fourth Proportional to 287,563.71, 396,840.71 and 158,507.24

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Solution

The fourth proportional to 287,563.71, 396,840.71 and 158,507.24 is: 218,741.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,563.71 : 396,840.71 = 158,507.24 : x
  2. Step 2: Convert to fraction form
    287,563.71/396,840.71 = 158,507.24/x
  3. Step 3: Cross multiply
    287,563.71x = 396,840.71 × 158,507.24
  4. Step 4: Simplify right side
    287,563.71x = 62,902,125,661.74
  5. Step 5: Solve for x
    x = 62,902,125,661.74/287,563.71
  6. Step 6: Final answer
    x = 218,741.53

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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.