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Finding the Fourth Proportional to 307,389.34, 424,199.76 and 171,432.06

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Solution

The fourth proportional to 307,389.34, 424,199.76 and 171,432.06 is: 236,577.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,389.34 : 424,199.76 = 171,432.06 : x
  2. Step 2: Convert to fraction form
    307,389.34/424,199.76 = 171,432.06/x
  3. Step 3: Cross multiply
    307,389.34x = 424,199.76 × 171,432.06
  4. Step 4: Simplify right side
    307,389.34x = 72,721,438,708.31
  5. Step 5: Solve for x
    x = 72,721,438,708.31/307,389.34
  6. Step 6: Final answer
    x = 236,577.62

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1.5x scale

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.