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Finding the Fourth Proportional to 405,077.04, 607,045.11 and 309,938.88

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Solution

The fourth proportional to 405,077.04, 607,045.11 and 309,938.88 is: 464,471.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,077.04 : 607,045.11 = 309,938.88 : x
  2. Step 2: Convert to fraction form
    405,077.04/607,045.11 = 309,938.88/x
  3. Step 3: Cross multiply
    405,077.04x = 607,045.11 × 309,938.88
  4. Step 4: Simplify right side
    405,077.04x = 188,146,881,502.88
  5. Step 5: Solve for x
    x = 188,146,881,502.88/405,077.04
  6. Step 6: Final answer
    x = 464,471.85

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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.