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Finding the Fourth Proportional to 402,670.80, 604,003.80 and 103,150.80

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Solution

The fourth proportional to 402,670.80, 604,003.80 and 103,150.80 is: 154,725.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,670.80 : 604,003.80 = 103,150.80 : x
  2. Step 2: Convert to fraction form
    402,670.80/604,003.80 = 103,150.80/x
  3. Step 3: Cross multiply
    402,670.80x = 604,003.80 × 103,150.80
  4. Step 4: Simplify right side
    402,670.80x = 62,303,475,173.04
  5. Step 5: Solve for x
    x = 62,303,475,173.04/402,670.80
  6. Step 6: Final answer
    x = 154,725.59

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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.