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Finding the Fourth Proportional to 430,845.60, 646,959.60 and 291,223.20

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Solution

The fourth proportional to 430,845.60, 646,959.60 and 291,223.20 is: 437,302.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,845.60 : 646,959.60 = 291,223.20 : x
  2. Step 2: Convert to fraction form
    430,845.60/646,959.60 = 291,223.20/x
  3. Step 3: Cross multiply
    430,845.60x = 646,959.60 × 291,223.20
  4. Step 4: Simplify right side
    430,845.60x = 188,409,644,982.72
  5. Step 5: Solve for x
    x = 188,409,644,982.72/430,845.60
  6. Step 6: Final answer
    x = 437,302.01

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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.