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Finding the Fourth Proportional to 285,995.80, 429,139.50 and 117,645.40

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Solution

The fourth proportional to 285,995.80, 429,139.50 and 117,645.40 is: 176,528.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,995.80 : 429,139.50 = 117,645.40 : x
  2. Step 2: Convert to fraction form
    285,995.80/429,139.50 = 117,645.40/x
  3. Step 3: Cross multiply
    285,995.80x = 429,139.50 × 117,645.40
  4. Step 4: Simplify right side
    285,995.80x = 50,486,288,133.30
  5. Step 5: Solve for x
    x = 50,486,288,133.30/285,995.80
  6. Step 6: Final answer
    x = 176,528.08

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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.