Home / 386,054.88-578,940-133,271.04

Finding the Fourth Proportional to 386,054.88, 578,940 and 133,271.04

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Solution

The fourth proportional to 386,054.88, 578,940 and 133,271.04 is: 199,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,054.88 : 578,940 = 133,271.04 : x
  2. Step 2: Convert to fraction form
    386,054.88/578,940 = 133,271.04/x
  3. Step 3: Cross multiply
    386,054.88x = 578,940 × 133,271.04
  4. Step 4: Simplify right side
    386,054.88x = 77,155,935,897.60
  5. Step 5: Solve for x
    x = 77,155,935,897.60/386,054.88
  6. Step 6: Final answer
    x = 199,857.43

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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.