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Finding the Fourth Proportional to 423,443.16, 634,681.49 and 170,561.70

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Solution

The fourth proportional to 423,443.16, 634,681.49 and 170,561.70 is: 255,647.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,443.16 : 634,681.49 = 170,561.70 : x
  2. Step 2: Convert to fraction form
    423,443.16/634,681.49 = 170,561.70/x
  3. Step 3: Cross multiply
    423,443.16x = 634,681.49 × 170,561.70
  4. Step 4: Simplify right side
    423,443.16x = 108,252,353,040.13
  5. Step 5: Solve for x
    x = 108,252,353,040.13/423,443.16
  6. Step 6: Final answer
    x = 255,647.90

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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.