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Finding the Fourth Proportional to 553,798.44, 830,685.73 and 154,428.57

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Solution

The fourth proportional to 553,798.44, 830,685.73 and 154,428.57 is: 231,639.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,798.44 : 830,685.73 = 154,428.57 : x
  2. Step 2: Convert to fraction form
    553,798.44/830,685.73 = 154,428.57/x
  3. Step 3: Cross multiply
    553,798.44x = 830,685.73 × 154,428.57
  4. Step 4: Simplify right side
    553,798.44x = 128,281,609,403.31
  5. Step 5: Solve for x
    x = 128,281,609,403.31/553,798.44
  6. Step 6: Final answer
    x = 231,639.53

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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.