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Finding the Fourth Proportional to 358,092.80, 537,139.20 and 108,742.40

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Solution

The fourth proportional to 358,092.80, 537,139.20 and 108,742.40 is: 163,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,092.80 : 537,139.20 = 108,742.40 : x
  2. Step 2: Convert to fraction form
    358,092.80/537,139.20 = 108,742.40/x
  3. Step 3: Cross multiply
    358,092.80x = 537,139.20 × 108,742.40
  4. Step 4: Simplify right side
    358,092.80x = 58,409,805,742.08
  5. Step 5: Solve for x
    x = 58,409,805,742.08/358,092.80
  6. Step 6: Final answer
    x = 163,113.60

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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.