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Finding the Fourth Proportional to 309,427.50, 427,009.95 and 175,291.50

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Solution

The fourth proportional to 309,427.50, 427,009.95 and 175,291.50 is: 241,902.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,427.50 : 427,009.95 = 175,291.50 : x
  2. Step 2: Convert to fraction form
    309,427.50/427,009.95 = 175,291.50/x
  3. Step 3: Cross multiply
    309,427.50x = 427,009.95 × 175,291.50
  4. Step 4: Simplify right side
    309,427.50x = 74,851,214,650.43
  5. Step 5: Solve for x
    x = 74,851,214,650.43/309,427.50
  6. Step 6: Final answer
    x = 241,902.27

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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.