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Finding the Fourth Proportional to 305,059.92, 457,317.72 and 155,216.40

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Solution

The fourth proportional to 305,059.92, 457,317.72 and 155,216.40 is: 232,686.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,059.92 : 457,317.72 = 155,216.40 : x
  2. Step 2: Convert to fraction form
    305,059.92/457,317.72 = 155,216.40/x
  3. Step 3: Cross multiply
    305,059.92x = 457,317.72 × 155,216.40
  4. Step 4: Simplify right side
    305,059.92x = 70,983,210,154.61
  5. Step 5: Solve for x
    x = 70,983,210,154.61/305,059.92
  6. Step 6: Final answer
    x = 232,686.12

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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.