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Finding the Fourth Proportional to 312,637.73, 431,510.90 and 176,750.30

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Solution

The fourth proportional to 312,637.73, 431,510.90 and 176,750.30 is: 243,955.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,637.73 : 431,510.90 = 176,750.30 : x
  2. Step 2: Convert to fraction form
    312,637.73/431,510.90 = 176,750.30/x
  3. Step 3: Cross multiply
    312,637.73x = 431,510.90 × 176,750.30
  4. Step 4: Simplify right side
    312,637.73x = 76,269,681,223.30
  5. Step 5: Solve for x
    x = 76,269,681,223.30/312,637.73
  6. Step 6: Final answer
    x = 243,955.46

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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.