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Finding the Fourth Proportional to 615,516.70, 923,145.45 and 260,542.30

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Solution

The fourth proportional to 615,516.70, 923,145.45 and 260,542.30 is: 390,758.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,516.70 : 923,145.45 = 260,542.30 : x
  2. Step 2: Convert to fraction form
    615,516.70/923,145.45 = 260,542.30/x
  3. Step 3: Cross multiply
    615,516.70x = 923,145.45 × 260,542.30
  4. Step 4: Simplify right side
    615,516.70x = 240,518,438,777.54
  5. Step 5: Solve for x
    x = 240,518,438,777.54/615,516.70
  6. Step 6: Final answer
    x = 390,758.59

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1.5x scale

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.