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Finding the Fourth Proportional to 615,318.81, 923,075.82 and 260,335.50

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Solution

The fourth proportional to 615,318.81, 923,075.82 and 260,335.50 is: 390,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,318.81 : 923,075.82 = 260,335.50 : x
  2. Step 2: Convert to fraction form
    615,318.81/923,075.82 = 260,335.50/x
  3. Step 3: Cross multiply
    615,318.81x = 923,075.82 × 260,335.50
  4. Step 4: Simplify right side
    615,318.81x = 240,309,405,137.61
  5. Step 5: Solve for x
    x = 240,309,405,137.61/615,318.81
  6. Step 6: Final answer
    x = 390,544.55

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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.