Home / 385,787.60-578,681.40-133,067.60

Finding the Fourth Proportional to 385,787.60, 578,681.40 and 133,067.60

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Solution

The fourth proportional to 385,787.60, 578,681.40 and 133,067.60 is: 199,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,787.60 : 578,681.40 = 133,067.60 : x
  2. Step 2: Convert to fraction form
    385,787.60/578,681.40 = 133,067.60/x
  3. Step 3: Cross multiply
    385,787.60x = 578,681.40 × 133,067.60
  4. Step 4: Simplify right side
    385,787.60x = 77,003,745,062.64
  5. Step 5: Solve for x
    x = 77,003,745,062.64/385,787.60
  6. Step 6: Final answer
    x = 199,601.40

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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.