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Finding the Fourth Proportional to 260,400.48, 390,615.95 and 100,477.27

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Solution

The fourth proportional to 260,400.48, 390,615.95 and 100,477.27 is: 150,721.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,400.48 : 390,615.95 = 100,477.27 : x
  2. Step 2: Convert to fraction form
    260,400.48/390,615.95 = 100,477.27/x
  3. Step 3: Cross multiply
    260,400.48x = 390,615.95 × 100,477.27
  4. Step 4: Simplify right side
    260,400.48x = 39,248,024,274.46
  5. Step 5: Solve for x
    x = 39,248,024,274.46/260,400.48
  6. Step 6: Final answer
    x = 150,721.78

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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.