Home / 218,907,859.30-328,145,212.95-103,689,888.10

Finding the Fourth Proportional to 218,907,859.30, 328,145,212.95 and 103,689,888.10

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Solution

The fourth proportional to 218,907,859.30, 328,145,212.95 and 103,689,888.10 is: 155,432,246.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,907,859.30 : 328,145,212.95 = 103,689,888.10 : x
  2. Step 2: Convert to fraction form
    218,907,859.30/328,145,212.95 = 103,689,888.10/x
  3. Step 3: Cross multiply
    218,907,859.30x = 328,145,212.95 × 103,689,888.10
  4. Step 4: Simplify right side
    218,907,859.30x = 34,025,340,411,336,168
  5. Step 5: Solve for x
    x = 34,025,340,411,336,168/218,907,859.30
  6. Step 6: Final answer
    x = 155,432,246.79

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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.