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Finding the Fourth Proportional to 610,911.60, 916,804.80 and 256,180.20

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Solution

The fourth proportional to 610,911.60, 916,804.80 and 256,180.20 is: 384,453.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,911.60 : 916,804.80 = 256,180.20 : x
  2. Step 2: Convert to fraction form
    610,911.60/916,804.80 = 256,180.20/x
  3. Step 3: Cross multiply
    610,911.60x = 916,804.80 × 256,180.20
  4. Step 4: Simplify right side
    610,911.60x = 234,867,237,024.96
  5. Step 5: Solve for x
    x = 234,867,237,024.96/610,911.60
  6. Step 6: Final answer
    x = 384,453.72

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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.