Home / 258,623,880.60-387,991,808.10-76,889,429.40

Finding the Fourth Proportional to 258,623,880.60, 387,991,808.10 and 76,889,429.40

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Solution

The fourth proportional to 258,623,880.60, 387,991,808.10 and 76,889,429.40 is: 115,350,789.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,623,880.60 : 387,991,808.10 = 76,889,429.40 : x
  2. Step 2: Convert to fraction form
    258,623,880.60/387,991,808.10 = 76,889,429.40/x
  3. Step 3: Cross multiply
    258,623,880.60x = 387,991,808.10 × 76,889,429.40
  4. Step 4: Simplify right side
    258,623,880.60x = 29,832,468,736,683,304
  5. Step 5: Solve for x
    x = 29,832,468,736,683,304/258,623,880.60
  6. Step 6: Final answer
    x = 115,350,789.21

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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.