Home / 258,596,870.40-388,343,203.20-137,664,518.40

Finding the Fourth Proportional to 258,596,870.40, 388,343,203.20 and 137,664,518.40

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Solution

The fourth proportional to 258,596,870.40, 388,343,203.20 and 137,664,518.40 is: 206,735,216.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,596,870.40 : 388,343,203.20 = 137,664,518.40 : x
  2. Step 2: Convert to fraction form
    258,596,870.40/388,343,203.20 = 137,664,518.40/x
  3. Step 3: Cross multiply
    258,596,870.40x = 388,343,203.20 × 137,664,518.40
  4. Step 4: Simplify right side
    258,596,870.40x = 53,461,080,042,441,336
  5. Step 5: Solve for x
    x = 53,461,080,042,441,336/258,596,870.40
  6. Step 6: Final answer
    x = 206,735,216.71

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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.