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Finding the Fourth Proportional to 371,410.83, 513,027.72 and 307,139.67

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Solution

The fourth proportional to 371,410.83, 513,027.72 and 307,139.67 is: 424,250.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,410.83 : 513,027.72 = 307,139.67 : x
  2. Step 2: Convert to fraction form
    371,410.83/513,027.72 = 307,139.67/x
  3. Step 3: Cross multiply
    371,410.83x = 513,027.72 × 307,139.67
  4. Step 4: Simplify right side
    371,410.83x = 157,571,164,621.65
  5. Step 5: Solve for x
    x = 157,571,164,621.65/371,410.83
  6. Step 6: Final answer
    x = 424,250.32

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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.