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Finding the Fourth Proportional to 381,763.70, 572,645.55 and 310,904.90

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Solution

The fourth proportional to 381,763.70, 572,645.55 and 310,904.90 is: 466,357.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,763.70 : 572,645.55 = 310,904.90 : x
  2. Step 2: Convert to fraction form
    381,763.70/572,645.55 = 310,904.90/x
  3. Step 3: Cross multiply
    381,763.70x = 572,645.55 × 310,904.90
  4. Step 4: Simplify right side
    381,763.70x = 178,038,307,458.20
  5. Step 5: Solve for x
    x = 178,038,307,458.20/381,763.70
  6. Step 6: Final answer
    x = 466,357.35

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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.