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Finding the Fourth Proportional to 309,647.56, 427,320.06 and 175,511.56

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Solution

The fourth proportional to 309,647.56, 427,320.06 and 175,511.56 is: 242,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,647.56 : 427,320.06 = 175,511.56 : x
  2. Step 2: Convert to fraction form
    309,647.56/427,320.06 = 175,511.56/x
  3. Step 3: Cross multiply
    309,647.56x = 427,320.06 × 175,511.56
  4. Step 4: Simplify right side
    309,647.56x = 74,999,610,349.89
  5. Step 5: Solve for x
    x = 74,999,610,349.89/309,647.56
  6. Step 6: Final answer
    x = 242,209.60

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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.