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Finding the Fourth Proportional to 402,358.55, 603,581.55 and 149,609.39

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Solution

The fourth proportional to 402,358.55, 603,581.55 and 149,609.39 is: 224,430.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,358.55 : 603,581.55 = 149,609.39 : x
  2. Step 2: Convert to fraction form
    402,358.55/603,581.55 = 149,609.39/x
  3. Step 3: Cross multiply
    402,358.55x = 603,581.55 × 149,609.39
  4. Step 4: Simplify right side
    402,358.55x = 90,301,467,510.75
  5. Step 5: Solve for x
    x = 90,301,467,510.75/402,358.55
  6. Step 6: Final answer
    x = 224,430.34

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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.