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Finding the Fourth Proportional to 553,428.16, 830,059.56 and 154,027.30

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Solution

The fourth proportional to 553,428.16, 830,059.56 and 154,027.30 is: 231,017.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,428.16 : 830,059.56 = 154,027.30 : x
  2. Step 2: Convert to fraction form
    553,428.16/830,059.56 = 154,027.30/x
  3. Step 3: Cross multiply
    553,428.16x = 830,059.56 × 154,027.30
  4. Step 4: Simplify right side
    553,428.16x = 127,851,832,865.99
  5. Step 5: Solve for x
    x = 127,851,832,865.99/553,428.16
  6. Step 6: Final answer
    x = 231,017.94

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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.