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Finding the Fourth Proportional to 530,688.31, 732,358.60 and 288,975.60

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Solution

The fourth proportional to 530,688.31, 732,358.60 and 288,975.60 is: 398,791.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,688.31 : 732,358.60 = 288,975.60 : x
  2. Step 2: Convert to fraction form
    530,688.31/732,358.60 = 288,975.60/x
  3. Step 3: Cross multiply
    530,688.31x = 732,358.60 × 288,975.60
  4. Step 4: Simplify right side
    530,688.31x = 211,633,765,127.72
  5. Step 5: Solve for x
    x = 211,633,765,127.72/530,688.31
  6. Step 6: Final answer
    x = 398,791.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.