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Finding the Fourth Proportional to 478,831.91, 660,771.02 and 261,036.08

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Solution

The fourth proportional to 478,831.91, 660,771.02 and 261,036.08 is: 360,220.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,831.91 : 660,771.02 = 261,036.08 : x
  2. Step 2: Convert to fraction form
    478,831.91/660,771.02 = 261,036.08/x
  3. Step 3: Cross multiply
    478,831.91x = 660,771.02 × 261,036.08
  4. Step 4: Simplify right side
    478,831.91x = 172,485,074,187.14
  5. Step 5: Solve for x
    x = 172,485,074,187.14/478,831.91
  6. Step 6: Final answer
    x = 360,220.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.