Home / 386,075.52-578,970.88-133,291.36

Finding the Fourth Proportional to 386,075.52, 578,970.88 and 133,291.36

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Solution

The fourth proportional to 386,075.52, 578,970.88 and 133,291.36 is: 199,887.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,075.52 : 578,970.88 = 133,291.36 : x
  2. Step 2: Convert to fraction form
    386,075.52/578,970.88 = 133,291.36/x
  3. Step 3: Cross multiply
    386,075.52x = 578,970.88 × 133,291.36
  4. Step 4: Simplify right side
    386,075.52x = 77,171,815,995.60
  5. Step 5: Solve for x
    x = 77,171,815,995.60/386,075.52
  6. Step 6: Final answer
    x = 199,887.88

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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.