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Finding the Fourth Proportional to 553,800.44, 830,688.74 and 154,430.58

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Solution

The fourth proportional to 553,800.44, 830,688.74 and 154,430.58 is: 231,642.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,800.44 : 830,688.74 = 154,430.58 : x
  2. Step 2: Convert to fraction form
    553,800.44/830,688.74 = 154,430.58/x
  3. Step 3: Cross multiply
    553,800.44x = 830,688.74 × 154,430.58
  4. Step 4: Simplify right side
    553,800.44x = 128,283,743,917.67
  5. Step 5: Solve for x
    x = 128,283,743,917.67/553,800.44
  6. Step 6: Final answer
    x = 231,642.55

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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.