Home / 278,808,215.20-418,212,322.80-186,975,210.40

Finding the Fourth Proportional to 278,808,215.20, 418,212,322.80 and 186,975,210.40

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Solution

The fourth proportional to 278,808,215.20, 418,212,322.80 and 186,975,210.40 is: 280,462,815.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,808,215.20 : 418,212,322.80 = 186,975,210.40 : x
  2. Step 2: Convert to fraction form
    278,808,215.20/418,212,322.80 = 186,975,210.40/x
  3. Step 3: Cross multiply
    278,808,215.20x = 418,212,322.80 × 186,975,210.40
  4. Step 4: Simplify right side
    278,808,215.20x = 78,195,337,047,402,720
  5. Step 5: Solve for x
    x = 78,195,337,047,402,720/278,808,215.20
  6. Step 6: Final answer
    x = 280,462,815.60

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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.