Home / 291,162.24-402,022.80-286,512.15

Finding the Fourth Proportional to 291,162.24, 402,022.80 and 286,512.15

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Solution

The fourth proportional to 291,162.24, 402,022.80 and 286,512.15 is: 395,602.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,162.24 : 402,022.80 = 286,512.15 : x
  2. Step 2: Convert to fraction form
    291,162.24/402,022.80 = 286,512.15/x
  3. Step 3: Cross multiply
    291,162.24x = 402,022.80 × 286,512.15
  4. Step 4: Simplify right side
    291,162.24x = 115,184,416,777.02
  5. Step 5: Solve for x
    x = 115,184,416,777.02/291,162.24
  6. Step 6: Final answer
    x = 395,602.18

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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.