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Finding the Fourth Proportional to 356,258.96, 534,389.52 and 86,386.08

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Solution

The fourth proportional to 356,258.96, 534,389.52 and 86,386.08 is: 129,579.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,258.96 : 534,389.52 = 86,386.08 : x
  2. Step 2: Convert to fraction form
    356,258.96/534,389.52 = 86,386.08/x
  3. Step 3: Cross multiply
    356,258.96x = 534,389.52 × 86,386.08
  4. Step 4: Simplify right side
    356,258.96x = 46,163,815,825.88
  5. Step 5: Solve for x
    x = 46,163,815,825.88/356,258.96
  6. Step 6: Final answer
    x = 129,579.38

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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.