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Finding the Fourth Proportional to 287,854.98, 431,811.27 and 88,173.06

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Solution

The fourth proportional to 287,854.98, 431,811.27 and 88,173.06 is: 132,268.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,854.98 : 431,811.27 = 88,173.06 : x
  2. Step 2: Convert to fraction form
    287,854.98/431,811.27 = 88,173.06/x
  3. Step 3: Cross multiply
    287,854.98x = 431,811.27 × 88,173.06
  4. Step 4: Simplify right side
    287,854.98x = 38,074,121,018.39
  5. Step 5: Solve for x
    x = 38,074,121,018.39/287,854.98
  6. Step 6: Final answer
    x = 132,268.41

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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.