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Finding the Fourth Proportional to 356,782.60, 535,171.47 and 86,907.52

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Solution

The fourth proportional to 356,782.60, 535,171.47 and 86,907.52 is: 130,360.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,782.60 : 535,171.47 = 86,907.52 : x
  2. Step 2: Convert to fraction form
    356,782.60/535,171.47 = 86,907.52/x
  3. Step 3: Cross multiply
    356,782.60x = 535,171.47 × 86,907.52
  4. Step 4: Simplify right side
    356,782.60x = 46,510,425,232.45
  5. Step 5: Solve for x
    x = 46,510,425,232.45/356,782.60
  6. Step 6: Final answer
    x = 130,360.69

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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.