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Finding the Fourth Proportional to 223,726.95, 308,607.84 and 143,126.28

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Solution

The fourth proportional to 223,726.95, 308,607.84 and 143,126.28 is: 197,427.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,726.95 : 308,607.84 = 143,126.28 : x
  2. Step 2: Convert to fraction form
    223,726.95/308,607.84 = 143,126.28/x
  3. Step 3: Cross multiply
    223,726.95x = 308,607.84 × 143,126.28
  4. Step 4: Simplify right side
    223,726.95x = 44,169,892,118.04
  5. Step 5: Solve for x
    x = 44,169,892,118.04/223,726.95
  6. Step 6: Final answer
    x = 197,427.68

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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.