Home / 348,749.50-523,129.12-99,431.50

Finding the Fourth Proportional to 348,749.50, 523,129.12 and 99,431.50

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Solution

The fourth proportional to 348,749.50, 523,129.12 and 99,431.50 is: 149,148.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,749.50 : 523,129.12 = 99,431.50 : x
  2. Step 2: Convert to fraction form
    348,749.50/523,129.12 = 99,431.50/x
  3. Step 3: Cross multiply
    348,749.50x = 523,129.12 × 99,431.50
  4. Step 4: Simplify right side
    348,749.50x = 52,015,513,095.28
  5. Step 5: Solve for x
    x = 52,015,513,095.28/348,749.50
  6. Step 6: Final answer
    x = 149,148.64

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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.