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Finding the Fourth Proportional to 287,585.61, 396,871.02 and 158,528.67

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Solution

The fourth proportional to 287,585.61, 396,871.02 and 158,528.67 is: 218,771.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,585.61 : 396,871.02 = 158,528.67 : x
  2. Step 2: Convert to fraction form
    287,585.61/396,871.02 = 158,528.67/x
  3. Step 3: Cross multiply
    287,585.61x = 396,871.02 × 158,528.67
  4. Step 4: Simplify right side
    287,585.61x = 62,915,434,962.14
  5. Step 5: Solve for x
    x = 62,915,434,962.14/287,585.61
  6. Step 6: Final answer
    x = 218,771.15

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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.