Home / 338,730.75-507,653.20-138,817.08

Finding the Fourth Proportional to 338,730.75, 507,653.20 and 138,817.08

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Solution

The fourth proportional to 338,730.75, 507,653.20 and 138,817.08 is: 208,044.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,730.75 : 507,653.20 = 138,817.08 : x
  2. Step 2: Convert to fraction form
    338,730.75/507,653.20 = 138,817.08/x
  3. Step 3: Cross multiply
    338,730.75x = 507,653.20 × 138,817.08
  4. Step 4: Simplify right side
    338,730.75x = 70,470,934,876.66
  5. Step 5: Solve for x
    x = 70,470,934,876.66/338,730.75
  6. Step 6: Final answer
    x = 208,044.10

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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.