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Finding the Fourth Proportional to 279,681.40, 385,808.70 and 166,482.28

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Solution

The fourth proportional to 279,681.40, 385,808.70 and 166,482.28 is: 229,655.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,681.40 : 385,808.70 = 166,482.28 : x
  2. Step 2: Convert to fraction form
    279,681.40/385,808.70 = 166,482.28/x
  3. Step 3: Cross multiply
    279,681.40x = 385,808.70 × 166,482.28
  4. Step 4: Simplify right side
    279,681.40x = 64,230,312,019.84
  5. Step 5: Solve for x
    x = 64,230,312,019.84/279,681.40
  6. Step 6: Final answer
    x = 229,655.29

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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.