Home / 209,952,359.80-314,928,539.70-129,218,817.40

Finding the Fourth Proportional to 209,952,359.80, 314,928,539.70 and 129,218,817.40

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Solution

The fourth proportional to 209,952,359.80, 314,928,539.70 and 129,218,817.40 is: 193,828,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,359.80 : 314,928,539.70 = 129,218,817.40 : x
  2. Step 2: Convert to fraction form
    209,952,359.80/314,928,539.70 = 129,218,817.40/x
  3. Step 3: Cross multiply
    209,952,359.80x = 314,928,539.70 × 129,218,817.40
  4. Step 4: Simplify right side
    209,952,359.80x = 40,694,693,465,542,952
  5. Step 5: Solve for x
    x = 40,694,693,465,542,952/209,952,359.80
  6. Step 6: Final answer
    x = 193,828,226.10

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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.