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Finding the Fourth Proportional to 342,219.60, 513,387.60 and 105,518.16

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Solution

The fourth proportional to 342,219.60, 513,387.60 and 105,518.16 is: 158,295.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,219.60 : 513,387.60 = 105,518.16 : x
  2. Step 2: Convert to fraction form
    342,219.60/513,387.60 = 105,518.16/x
  3. Step 3: Cross multiply
    342,219.60x = 513,387.60 × 105,518.16
  4. Step 4: Simplify right side
    342,219.60x = 54,171,714,918.82
  5. Step 5: Solve for x
    x = 54,171,714,918.82/342,219.60
  6. Step 6: Final answer
    x = 158,295.19

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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.