Home / 287,864,232.80-431,796,349.20-190,929,394.40

Finding the Fourth Proportional to 287,864,232.80, 431,796,349.20 and 190,929,394.40

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Solution

The fourth proportional to 287,864,232.80, 431,796,349.20 and 190,929,394.40 is: 286,394,091.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,232.80 : 431,796,349.20 = 190,929,394.40 : x
  2. Step 2: Convert to fraction form
    287,864,232.80/431,796,349.20 = 190,929,394.40/x
  3. Step 3: Cross multiply
    287,864,232.80x = 431,796,349.20 × 190,929,394.40
  4. Step 4: Simplify right side
    287,864,232.80x = 82,442,615,456,886,928
  5. Step 5: Solve for x
    x = 82,442,615,456,886,928/287,864,232.80
  6. Step 6: Final answer
    x = 286,394,091.60

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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.