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Finding the Fourth Proportional to 426,498.16, 639,709.92 and 173,805.16

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Solution

The fourth proportional to 426,498.16, 639,709.92 and 173,805.16 is: 260,692.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,498.16 : 639,709.92 = 173,805.16 : x
  2. Step 2: Convert to fraction form
    426,498.16/639,709.92 = 173,805.16/x
  3. Step 3: Cross multiply
    426,498.16x = 639,709.92 × 173,805.16
  4. Step 4: Simplify right side
    426,498.16x = 111,184,884,999.19
  5. Step 5: Solve for x
    x = 111,184,884,999.19/426,498.16
  6. Step 6: Final answer
    x = 260,692.53

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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.