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Finding the Fourth Proportional to 539,192.89, 808,809.99 and 139,823.20

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Solution

The fourth proportional to 539,192.89, 808,809.99 and 139,823.20 is: 209,740.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,192.89 : 808,809.99 = 139,823.20 : x
  2. Step 2: Convert to fraction form
    539,192.89/808,809.99 = 139,823.20/x
  3. Step 3: Cross multiply
    539,192.89x = 808,809.99 × 139,823.20
  4. Step 4: Simplify right side
    539,192.89x = 113,090,400,993.77
  5. Step 5: Solve for x
    x = 113,090,400,993.77/539,192.89
  6. Step 6: Final answer
    x = 209,740.16

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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.