Home / 216,977,321.20-325,465,981.80-130,813,020.40

Finding the Fourth Proportional to 216,977,321.20, 325,465,981.80 and 130,813,020.40

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Solution

The fourth proportional to 216,977,321.20, 325,465,981.80 and 130,813,020.40 is: 196,219,530.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,977,321.20 : 325,465,981.80 = 130,813,020.40 : x
  2. Step 2: Convert to fraction form
    216,977,321.20/325,465,981.80 = 130,813,020.40/x
  3. Step 3: Cross multiply
    216,977,321.20x = 325,465,981.80 × 130,813,020.40
  4. Step 4: Simplify right side
    216,977,321.20x = 42,575,188,116,709,432
  5. Step 5: Solve for x
    x = 42,575,188,116,709,432/216,977,321.20
  6. Step 6: Final answer
    x = 196,219,530.60

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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.