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Finding the Fourth Proportional to 328,561.12, 453,380.64 and 242,565.76

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Solution

The fourth proportional to 328,561.12, 453,380.64 and 242,565.76 is: 334,715.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,561.12 : 453,380.64 = 242,565.76 : x
  2. Step 2: Convert to fraction form
    328,561.12/453,380.64 = 242,565.76/x
  3. Step 3: Cross multiply
    328,561.12x = 453,380.64 × 242,565.76
  4. Step 4: Simplify right side
    328,561.12x = 109,974,619,510.89
  5. Step 5: Solve for x
    x = 109,974,619,510.89/328,561.12
  6. Step 6: Final answer
    x = 334,715.87

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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.