Home / 287,538,992.40-431,308,488.60-236,520,656.40

Finding the Fourth Proportional to 287,538,992.40, 431,308,488.60 and 236,520,656.40

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Solution

The fourth proportional to 287,538,992.40, 431,308,488.60 and 236,520,656.40 is: 354,780,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,538,992.40 : 431,308,488.60 = 236,520,656.40 : x
  2. Step 2: Convert to fraction form
    287,538,992.40/431,308,488.60 = 236,520,656.40/x
  3. Step 3: Cross multiply
    287,538,992.40x = 431,308,488.60 × 236,520,656.40
  4. Step 4: Simplify right side
    287,538,992.40x = 102,013,366,834,563,920
  5. Step 5: Solve for x
    x = 102,013,366,834,563,920/287,538,992.40
  6. Step 6: Final answer
    x = 354,780,984.60

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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.