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Finding the Fourth Proportional to 421,261.92, 581,645.88 and 260,337.60

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Solution

The fourth proportional to 421,261.92, 581,645.88 and 260,337.60 is: 359,454.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,261.92 : 581,645.88 = 260,337.60 : x
  2. Step 2: Convert to fraction form
    421,261.92/581,645.88 = 260,337.60/x
  3. Step 3: Cross multiply
    421,261.92x = 581,645.88 × 260,337.60
  4. Step 4: Simplify right side
    421,261.92x = 151,424,292,449.09
  5. Step 5: Solve for x
    x = 151,424,292,449.09/421,261.92
  6. Step 6: Final answer
    x = 359,454.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.