Home / 203,430.84-305,187.24-70,316.28

Finding the Fourth Proportional to 203,430.84, 305,187.24 and 70,316.28

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Solution

The fourth proportional to 203,430.84, 305,187.24 and 70,316.28 is: 105,488.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,430.84 : 305,187.24 = 70,316.28 : x
  2. Step 2: Convert to fraction form
    203,430.84/305,187.24 = 70,316.28/x
  3. Step 3: Cross multiply
    203,430.84x = 305,187.24 × 70,316.28
  4. Step 4: Simplify right side
    203,430.84x = 21,459,631,420.27
  5. Step 5: Solve for x
    x = 21,459,631,420.27/203,430.84
  6. Step 6: Final answer
    x = 105,488.58

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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.