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Finding the Fourth Proportional to 423,274.65, 634,905 and 170,548.98

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Solution

The fourth proportional to 423,274.65, 634,905 and 170,548.98 is: 255,820.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,274.65 : 634,905 = 170,548.98 : x
  2. Step 2: Convert to fraction form
    423,274.65/634,905 = 170,548.98/x
  3. Step 3: Cross multiply
    423,274.65x = 634,905 × 170,548.98
  4. Step 4: Simplify right side
    423,274.65x = 108,282,400,146.90
  5. Step 5: Solve for x
    x = 108,282,400,146.90/423,274.65
  6. Step 6: Final answer
    x = 255,820.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.