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Finding the Fourth Proportional to 531,925.20, 734,080.20 and 305,641.68

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Solution

The fourth proportional to 531,925.20, 734,080.20 and 305,641.68 is: 421,798.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,925.20 : 734,080.20 = 305,641.68 : x
  2. Step 2: Convert to fraction form
    531,925.20/734,080.20 = 305,641.68/x
  3. Step 3: Cross multiply
    531,925.20x = 734,080.20 × 305,641.68
  4. Step 4: Simplify right side
    531,925.20x = 224,365,505,582.74
  5. Step 5: Solve for x
    x = 224,365,505,582.74/531,925.20
  6. Step 6: Final answer
    x = 421,798.98

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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.