Home / 521,165.04-781,739.40-166,176.72

Finding the Fourth Proportional to 521,165.04, 781,739.40 and 166,176.72

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Solution

The fourth proportional to 521,165.04, 781,739.40 and 166,176.72 is: 249,262.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,165.04 : 781,739.40 = 166,176.72 : x
  2. Step 2: Convert to fraction form
    521,165.04/781,739.40 = 166,176.72/x
  3. Step 3: Cross multiply
    521,165.04x = 781,739.40 × 166,176.72
  4. Step 4: Simplify right side
    521,165.04x = 129,906,889,386.77
  5. Step 5: Solve for x
    x = 129,906,889,386.77/521,165.04
  6. Step 6: Final answer
    x = 249,262.48

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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.