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Finding the Fourth Proportional to 426,468.34, 640,070.96 and 173,888.07

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Solution

The fourth proportional to 426,468.34, 640,070.96 and 173,888.07 is: 260,982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,468.34 : 640,070.96 = 173,888.07 : x
  2. Step 2: Convert to fraction form
    426,468.34/640,070.96 = 173,888.07/x
  3. Step 3: Cross multiply
    426,468.34x = 640,070.96 × 173,888.07
  4. Step 4: Simplify right side
    426,468.34x = 111,300,701,605.86
  5. Step 5: Solve for x
    x = 111,300,701,605.86/426,468.34
  6. Step 6: Final answer
    x = 260,982.33

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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.