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Finding the Fourth Proportional to 387,403.63, 581,118.56 and 103,094.45

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Solution

The fourth proportional to 387,403.63, 581,118.56 and 103,094.45 is: 154,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,403.63 : 581,118.56 = 103,094.45 : x
  2. Step 2: Convert to fraction form
    387,403.63/581,118.56 = 103,094.45/x
  3. Step 3: Cross multiply
    387,403.63x = 581,118.56 × 103,094.45
  4. Step 4: Simplify right side
    387,403.63x = 59,910,098,327.99
  5. Step 5: Solve for x
    x = 59,910,098,327.99/387,403.63
  6. Step 6: Final answer
    x = 154,645.17

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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.