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Finding the Fourth Proportional to 342,987.60, 514,999.80 and 264,190.80

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Solution

The fourth proportional to 342,987.60, 514,999.80 and 264,190.80 is: 396,685.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,987.60 : 514,999.80 = 264,190.80 : x
  2. Step 2: Convert to fraction form
    342,987.60/514,999.80 = 264,190.80/x
  3. Step 3: Cross multiply
    342,987.60x = 514,999.80 × 264,190.80
  4. Step 4: Simplify right side
    342,987.60x = 136,058,209,161.84
  5. Step 5: Solve for x
    x = 136,058,209,161.84/342,987.60
  6. Step 6: Final answer
    x = 396,685.50

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1.5x scale

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.