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Finding the Fourth Proportional to 287,713.48, 431,571.59 and 88,033.55

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Solution

The fourth proportional to 287,713.48, 431,571.59 and 88,033.55 is: 132,050.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,713.48 : 431,571.59 = 88,033.55 : x
  2. Step 2: Convert to fraction form
    287,713.48/431,571.59 = 88,033.55/x
  3. Step 3: Cross multiply
    287,713.48x = 431,571.59 × 88,033.55
  4. Step 4: Simplify right side
    287,713.48x = 37,992,779,146.84
  5. Step 5: Solve for x
    x = 37,992,779,146.84/287,713.48
  6. Step 6: Final answer
    x = 132,050.74

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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.