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Finding the Fourth Proportional to 287,750,129.40, 431,625,194.10 and 287,750,129.40

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Solution

The fourth proportional to 287,750,129.40, 431,625,194.10 and 287,750,129.40 is: 431,625,194.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,750,129.40 : 431,625,194.10 = 287,750,129.40 : x
  2. Step 2: Convert to fraction form
    287,750,129.40/431,625,194.10 = 287,750,129.40/x
  3. Step 3: Cross multiply
    287,750,129.40x = 431,625,194.10 × 287,750,129.40
  4. Step 4: Simplify right side
    287,750,129.40x = 124,200,205,454,575,120
  5. Step 5: Solve for x
    x = 124,200,205,454,575,120/287,750,129.40
  6. Step 6: Final answer
    x = 431,625,194.10

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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.