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Finding the Fourth Proportional to 368,221.62, 507,831.09 and 253,683.06

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Solution

The fourth proportional to 368,221.62, 507,831.09 and 253,683.06 is: 349,865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,221.62 : 507,831.09 = 253,683.06 : x
  2. Step 2: Convert to fraction form
    368,221.62/507,831.09 = 253,683.06/x
  3. Step 3: Cross multiply
    368,221.62x = 507,831.09 × 253,683.06
  4. Step 4: Simplify right side
    368,221.62x = 128,828,144,874.34
  5. Step 5: Solve for x
    x = 128,828,144,874.34/368,221.62
  6. Step 6: Final answer
    x = 349,865.78

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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.