Home / 218,756,931.30-328,082,908.95-126,441,036.90

Finding the Fourth Proportional to 218,756,931.30, 328,082,908.95 and 126,441,036.90

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Solution

The fourth proportional to 218,756,931.30, 328,082,908.95 and 126,441,036.90 is: 189,631,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,756,931.30 : 328,082,908.95 = 126,441,036.90 : x
  2. Step 2: Convert to fraction form
    218,756,931.30/328,082,908.95 = 126,441,036.90/x
  3. Step 3: Cross multiply
    218,756,931.30x = 328,082,908.95 × 126,441,036.90
  4. Step 4: Simplify right side
    218,756,931.30x = 41,483,143,196,806,288
  5. Step 5: Solve for x
    x = 41,483,143,196,806,288/218,756,931.30
  6. Step 6: Final answer
    x = 189,631,217.40

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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.