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Finding the Fourth Proportional to 338,389.68, 507,600.08 and 138,569.93

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Solution

The fourth proportional to 338,389.68, 507,600.08 and 138,569.93 is: 207,861.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,389.68 : 507,600.08 = 138,569.93 : x
  2. Step 2: Convert to fraction form
    338,389.68/507,600.08 = 138,569.93/x
  3. Step 3: Cross multiply
    338,389.68x = 507,600.08 × 138,569.93
  4. Step 4: Simplify right side
    338,389.68x = 70,338,107,783.78
  5. Step 5: Solve for x
    x = 70,338,107,783.78/338,389.68
  6. Step 6: Final answer
    x = 207,861.27

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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.