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Finding the Fourth Proportional to 521,007.68, 781,503.28 and 166,016.60

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Solution

The fourth proportional to 521,007.68, 781,503.28 and 166,016.60 is: 249,022.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,007.68 : 781,503.28 = 166,016.60 : x
  2. Step 2: Convert to fraction form
    521,007.68/781,503.28 = 166,016.60/x
  3. Step 3: Cross multiply
    521,007.68x = 781,503.28 × 166,016.60
  4. Step 4: Simplify right side
    521,007.68x = 129,742,517,434.45
  5. Step 5: Solve for x
    x = 129,742,517,434.45/521,007.68
  6. Step 6: Final answer
    x = 249,022.27

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1.5x scale

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.