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Finding the Fourth Proportional to 287,594.54, 431,392.90 and 87,914.16

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Solution

The fourth proportional to 287,594.54, 431,392.90 and 87,914.16 is: 131,871.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,594.54 : 431,392.90 = 87,914.16 : x
  2. Step 2: Convert to fraction form
    287,594.54/431,392.90 = 87,914.16/x
  3. Step 3: Cross multiply
    287,594.54x = 431,392.90 × 87,914.16
  4. Step 4: Simplify right side
    287,594.54x = 37,925,544,433.46
  5. Step 5: Solve for x
    x = 37,925,544,433.46/287,594.54
  6. Step 6: Final answer
    x = 131,871.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.