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Finding the Fourth Proportional to 291,803.60, 402,139.08 and 211,094.24

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Solution

The fourth proportional to 291,803.60, 402,139.08 and 211,094.24 is: 290,912.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,803.60 : 402,139.08 = 211,094.24 : x
  2. Step 2: Convert to fraction form
    291,803.60/402,139.08 = 211,094.24/x
  3. Step 3: Cross multiply
    291,803.60x = 402,139.08 × 211,094.24
  4. Step 4: Simplify right side
    291,803.60x = 84,889,243,466.90
  5. Step 5: Solve for x
    x = 84,889,243,466.90/291,803.60
  6. Step 6: Final answer
    x = 290,912.26

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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.