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Finding the Fourth Proportional to 615,329.31, 923,091.57 and 260,346

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Solution

The fourth proportional to 615,329.31, 923,091.57 and 260,346 is: 390,560.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,329.31 : 923,091.57 = 260,346 : x
  2. Step 2: Convert to fraction form
    615,329.31/923,091.57 = 260,346/x
  3. Step 3: Cross multiply
    615,329.31x = 923,091.57 × 260,346
  4. Step 4: Simplify right side
    615,329.31x = 240,323,197,883.22
  5. Step 5: Solve for x
    x = 240,323,197,883.22/615,329.31
  6. Step 6: Final answer
    x = 390,560.30

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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.