Home / 289,472,031.20-434,208,046.80-207,842,693.60

Finding the Fourth Proportional to 289,472,031.20, 434,208,046.80 and 207,842,693.60

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Solution

The fourth proportional to 289,472,031.20, 434,208,046.80 and 207,842,693.60 is: 311,764,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,472,031.20 : 434,208,046.80 = 207,842,693.60 : x
  2. Step 2: Convert to fraction form
    289,472,031.20/434,208,046.80 = 207,842,693.60/x
  3. Step 3: Cross multiply
    289,472,031.20x = 434,208,046.80 × 207,842,693.60
  4. Step 4: Simplify right side
    289,472,031.20x = 90,246,970,029,706,864
  5. Step 5: Solve for x
    x = 90,246,970,029,706,864/289,472,031.20
  6. Step 6: Final answer
    x = 311,764,040.40

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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.