Home / 218,878,384.85-302,049,931.61-121,093,940.69

Finding the Fourth Proportional to 218,878,384.85, 302,049,931.61 and 121,093,940.69

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Solution

The fourth proportional to 218,878,384.85, 302,049,931.61 and 121,093,940.69 is: 167,108,399.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,878,384.85 : 302,049,931.61 = 121,093,940.69 : x
  2. Step 2: Convert to fraction form
    218,878,384.85/302,049,931.61 = 121,093,940.69/x
  3. Step 3: Cross multiply
    218,878,384.85x = 302,049,931.61 × 121,093,940.69
  4. Step 4: Simplify right side
    218,878,384.85x = 36,576,416,503,194,432
  5. Step 5: Solve for x
    x = 36,576,416,503,194,432/218,878,384.85
  6. Step 6: Final answer
    x = 167,108,399.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.