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Finding the Fourth Proportional to 561,717.78, 841,831.47 and 245,830.74

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Solution

The fourth proportional to 561,717.78, 841,831.47 and 245,830.74 is: 368,419.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,717.78 : 841,831.47 = 245,830.74 : x
  2. Step 2: Convert to fraction form
    561,717.78/841,831.47 = 245,830.74/x
  3. Step 3: Cross multiply
    561,717.78x = 841,831.47 × 245,830.74
  4. Step 4: Simplify right side
    561,717.78x = 206,948,053,225.39
  5. Step 5: Solve for x
    x = 206,948,053,225.39/561,717.78
  6. Step 6: Final answer
    x = 368,419.98

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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.