Home / 258,596,865.40-388,343,195.70-137,664,513.40

Finding the Fourth Proportional to 258,596,865.40, 388,343,195.70 and 137,664,513.40

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Solution

The fourth proportional to 258,596,865.40, 388,343,195.70 and 137,664,513.40 is: 206,735,209.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,596,865.40 : 388,343,195.70 = 137,664,513.40 : x
  2. Step 2: Convert to fraction form
    258,596,865.40/388,343,195.70 = 137,664,513.40/x
  3. Step 3: Cross multiply
    258,596,865.40x = 388,343,195.70 × 137,664,513.40
  4. Step 4: Simplify right side
    258,596,865.40x = 53,461,077,068,241,472
  5. Step 5: Solve for x
    x = 53,461,077,068,241,472/258,596,865.40
  6. Step 6: Final answer
    x = 206,735,209.21

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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.