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Finding the Fourth Proportional to 553,708, 830,700.72 and 159,724

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Solution

The fourth proportional to 553,708, 830,700.72 and 159,724 is: 239,626.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,708 : 830,700.72 = 159,724 : x
  2. Step 2: Convert to fraction form
    553,708/830,700.72 = 159,724/x
  3. Step 3: Cross multiply
    553,708x = 830,700.72 × 159,724
  4. Step 4: Simplify right side
    553,708x = 132,682,841,801.28
  5. Step 5: Solve for x
    x = 132,682,841,801.28/553,708
  6. Step 6: Final answer
    x = 239,626.02

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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.