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Finding the Fourth Proportional to 355,915.09, 533,951.06 and 103,206.13

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Solution

The fourth proportional to 355,915.09, 533,951.06 and 103,206.13 is: 154,831.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,915.09 : 533,951.06 = 103,206.13 : x
  2. Step 2: Convert to fraction form
    355,915.09/533,951.06 = 103,206.13/x
  3. Step 3: Cross multiply
    355,915.09x = 533,951.06 × 103,206.13
  4. Step 4: Simplify right side
    355,915.09x = 55,107,020,854.60
  5. Step 5: Solve for x
    x = 55,107,020,854.60/355,915.09
  6. Step 6: Final answer
    x = 154,831.93

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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.