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Finding the Fourth Proportional to 307,708, 424,637.58 and 173,572

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Solution

The fourth proportional to 307,708, 424,637.58 and 173,572 is: 239,529.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,708 : 424,637.58 = 173,572 : x
  2. Step 2: Convert to fraction form
    307,708/424,637.58 = 173,572/x
  3. Step 3: Cross multiply
    307,708x = 424,637.58 × 173,572
  4. Step 4: Simplify right side
    307,708x = 73,705,194,035.76
  5. Step 5: Solve for x
    x = 73,705,194,035.76/307,708
  6. Step 6: Final answer
    x = 239,529.66

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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.