Home / 312,465,839.40-468,370,663.08-105,132,274.20

Finding the Fourth Proportional to 312,465,839.40, 468,370,663.08 and 105,132,274.20

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Solution

The fourth proportional to 312,465,839.40, 468,370,663.08 and 105,132,274.20 is: 157,588,020.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,465,839.40 : 468,370,663.08 = 105,132,274.20 : x
  2. Step 2: Convert to fraction form
    312,465,839.40/468,370,663.08 = 105,132,274.20/x
  3. Step 3: Cross multiply
    312,465,839.40x = 468,370,663.08 × 105,132,274.20
  4. Step 4: Simplify right side
    312,465,839.40x = 49,240,872,978,162,376
  5. Step 5: Solve for x
    x = 49,240,872,978,162,376/312,465,839.40
  6. Step 6: Final answer
    x = 157,588,020.09

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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.