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Finding the Fourth Proportional to 553,581.68, 830,373.28 and 154,223.60

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Solution

The fourth proportional to 553,581.68, 830,373.28 and 154,223.60 is: 231,335.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,581.68 : 830,373.28 = 154,223.60 : x
  2. Step 2: Convert to fraction form
    553,581.68/830,373.28 = 154,223.60/x
  3. Step 3: Cross multiply
    553,581.68x = 830,373.28 × 154,223.60
  4. Step 4: Simplify right side
    553,581.68x = 128,063,156,585.41
  5. Step 5: Solve for x
    x = 128,063,156,585.41/553,581.68
  6. Step 6: Final answer
    x = 231,335.61

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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.