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Finding the Fourth Proportional to 537,991.79, 742,430.90 and 308,557.94

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Solution

The fourth proportional to 537,991.79, 742,430.90 and 308,557.94 is: 425,811.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,991.79 : 742,430.90 = 308,557.94 : x
  2. Step 2: Convert to fraction form
    537,991.79/742,430.90 = 308,557.94/x
  3. Step 3: Cross multiply
    537,991.79x = 742,430.90 × 308,557.94
  4. Step 4: Simplify right side
    537,991.79x = 229,082,949,096.35
  5. Step 5: Solve for x
    x = 229,082,949,096.35/537,991.79
  6. Step 6: Final answer
    x = 425,811.24

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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.