Home / 287,864,138.40-431,796,207.60-236,208,073.20

Finding the Fourth Proportional to 287,864,138.40, 431,796,207.60 and 236,208,073.20

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Solution

The fourth proportional to 287,864,138.40, 431,796,207.60 and 236,208,073.20 is: 354,312,109.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,138.40 : 431,796,207.60 = 236,208,073.20 : x
  2. Step 2: Convert to fraction form
    287,864,138.40/431,796,207.60 = 236,208,073.20/x
  3. Step 3: Cross multiply
    287,864,138.40x = 431,796,207.60 × 236,208,073.20
  4. Step 4: Simplify right side
    287,864,138.40x = 101,993,750,212,263,200
  5. Step 5: Solve for x
    x = 101,993,750,212,263,200/287,864,138.40
  6. Step 6: Final answer
    x = 354,312,109.80

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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.