Home / 291,278.08-402,087.63-195,840.10

Finding the Fourth Proportional to 291,278.08, 402,087.63 and 195,840.10

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Solution

The fourth proportional to 291,278.08, 402,087.63 and 195,840.10 is: 270,342.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,278.08 : 402,087.63 = 195,840.10 : x
  2. Step 2: Convert to fraction form
    291,278.08/402,087.63 = 195,840.10/x
  3. Step 3: Cross multiply
    291,278.08x = 402,087.63 × 195,840.10
  4. Step 4: Simplify right side
    291,278.08x = 78,744,881,667.96
  5. Step 5: Solve for x
    x = 78,744,881,667.96/291,278.08
  6. Step 6: Final answer
    x = 270,342.63

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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.