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Finding the Fourth Proportional to 423,258.80, 634,952.52 and 138,854.96

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Solution

The fourth proportional to 423,258.80, 634,952.52 and 138,854.96 is: 208,303.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,258.80 : 634,952.52 = 138,854.96 : x
  2. Step 2: Convert to fraction form
    423,258.80/634,952.52 = 138,854.96/x
  3. Step 3: Cross multiply
    423,258.80x = 634,952.52 × 138,854.96
  4. Step 4: Simplify right side
    423,258.80x = 88,166,306,766.50
  5. Step 5: Solve for x
    x = 88,166,306,766.50/423,258.80
  6. Step 6: Final answer
    x = 208,303.54

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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.