Home / 475,116.40-711,292.20-288,031.60

Finding the Fourth Proportional to 475,116.40, 711,292.20 and 288,031.60

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Solution

The fourth proportional to 475,116.40, 711,292.20 and 288,031.60 is: 431,209.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,116.40 : 711,292.20 = 288,031.60 : x
  2. Step 2: Convert to fraction form
    475,116.40/711,292.20 = 288,031.60/x
  3. Step 3: Cross multiply
    475,116.40x = 711,292.20 × 288,031.60
  4. Step 4: Simplify right side
    475,116.40x = 204,874,630,433.52
  5. Step 5: Solve for x
    x = 204,874,630,433.52/475,116.40
  6. Step 6: Final answer
    x = 431,209.34

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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.