Home / 289,963,809.40-434,945,714.10-278,816,135.80

Finding the Fourth Proportional to 289,963,809.40, 434,945,714.10 and 278,816,135.80

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Solution

The fourth proportional to 289,963,809.40, 434,945,714.10 and 278,816,135.80 is: 418,224,203.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,963,809.40 : 434,945,714.10 = 278,816,135.80 : x
  2. Step 2: Convert to fraction form
    289,963,809.40/434,945,714.10 = 278,816,135.80/x
  3. Step 3: Cross multiply
    289,963,809.40x = 434,945,714.10 × 278,816,135.80
  4. Step 4: Simplify right side
    289,963,809.40x = 121,269,883,288,133,584
  5. Step 5: Solve for x
    x = 121,269,883,288,133,584/289,963,809.40
  6. Step 6: Final answer
    x = 418,224,203.70

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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.