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Finding the Fourth Proportional to 353,643.41, 530,459.91 and 87,403.95

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Solution

The fourth proportional to 353,643.41, 530,459.91 and 87,403.95 is: 131,104.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,643.41 : 530,459.91 = 87,403.95 : x
  2. Step 2: Convert to fraction form
    353,643.41/530,459.91 = 87,403.95/x
  3. Step 3: Cross multiply
    353,643.41x = 530,459.91 × 87,403.95
  4. Step 4: Simplify right side
    353,643.41x = 46,364,291,450.64
  5. Step 5: Solve for x
    x = 46,364,291,450.64/353,643.41
  6. Step 6: Final answer
    x = 131,104.64

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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.