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Finding the Fourth Proportional to 370,119.79, 510,734.55 and 217,141.98

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Solution

The fourth proportional to 370,119.79, 510,734.55 and 217,141.98 is: 299,637.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,119.79 : 510,734.55 = 217,141.98 : x
  2. Step 2: Convert to fraction form
    370,119.79/510,734.55 = 217,141.98/x
  3. Step 3: Cross multiply
    370,119.79x = 510,734.55 × 217,141.98
  4. Step 4: Simplify right side
    370,119.79x = 110,901,908,711.87
  5. Step 5: Solve for x
    x = 110,901,908,711.87/370,119.79
  6. Step 6: Final answer
    x = 299,637.88

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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.