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Finding the Fourth Proportional to 403,081.79, 604,623.15 and 103,564.85

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Solution

The fourth proportional to 403,081.79, 604,623.15 and 103,564.85 is: 155,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,081.79 : 604,623.15 = 103,564.85 : x
  2. Step 2: Convert to fraction form
    403,081.79/604,623.15 = 103,564.85/x
  3. Step 3: Cross multiply
    403,081.79x = 604,623.15 × 103,564.85
  4. Step 4: Simplify right side
    403,081.79x = 62,617,707,477.75
  5. Step 5: Solve for x
    x = 62,617,707,477.75/403,081.79
  6. Step 6: Final answer
    x = 155,347.40

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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.