Home / 615,386-923,113.56-172,188.56

Finding the Fourth Proportional to 615,386, 923,113.56 and 172,188.56

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Solution

The fourth proportional to 615,386, 923,113.56 and 172,188.56 is: 258,292.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,386 : 923,113.56 = 172,188.56 : x
  2. Step 2: Convert to fraction form
    615,386/923,113.56 = 172,188.56/x
  3. Step 3: Cross multiply
    615,386x = 923,113.56 × 172,188.56
  4. Step 4: Simplify right side
    615,386x = 158,949,594,612.87
  5. Step 5: Solve for x
    x = 158,949,594,612.87/615,386
  6. Step 6: Final answer
    x = 258,292.51

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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.