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Finding the Fourth Proportional to 417,719.40, 626,579.10 and 251,831.40

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Solution

The fourth proportional to 417,719.40, 626,579.10 and 251,831.40 is: 377,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,719.40 : 626,579.10 = 251,831.40 : x
  2. Step 2: Convert to fraction form
    417,719.40/626,579.10 = 251,831.40/x
  3. Step 3: Cross multiply
    417,719.40x = 626,579.10 × 251,831.40
  4. Step 4: Simplify right side
    417,719.40x = 157,792,291,963.74
  5. Step 5: Solve for x
    x = 157,792,291,963.74/417,719.40
  6. Step 6: Final answer
    x = 377,747.10

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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.