Home / 212,854.28-319,005.59-86,347.26

Finding the Fourth Proportional to 212,854.28, 319,005.59 and 86,347.26

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Solution

The fourth proportional to 212,854.28, 319,005.59 and 86,347.26 is: 129,409.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,854.28 : 319,005.59 = 86,347.26 : x
  2. Step 2: Convert to fraction form
    212,854.28/319,005.59 = 86,347.26/x
  3. Step 3: Cross multiply
    212,854.28x = 319,005.59 × 86,347.26
  4. Step 4: Simplify right side
    212,854.28x = 27,545,258,189.45
  5. Step 5: Solve for x
    x = 27,545,258,189.45/212,854.28
  6. Step 6: Final answer
    x = 129,409.00

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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.