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Finding the Fourth Proportional to 356,556.47, 534,830.58 and 86,686.14

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Solution

The fourth proportional to 356,556.47, 534,830.58 and 86,686.14 is: 130,028.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,556.47 : 534,830.58 = 86,686.14 : x
  2. Step 2: Convert to fraction form
    356,556.47/534,830.58 = 86,686.14/x
  3. Step 3: Cross multiply
    356,556.47x = 534,830.58 × 86,686.14
  4. Step 4: Simplify right side
    356,556.47x = 46,362,398,534.16
  5. Step 5: Solve for x
    x = 46,362,398,534.16/356,556.47
  6. Step 6: Final answer
    x = 130,028.21

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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.